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This commit is contained in:
Tim Stallard 2017-12-25 23:22:40 +00:00
parent d5fbba3277
commit 47510ec0ff
Signed by: Tim
GPG Key ID: E18E975C6A734F07
24 changed files with 2002 additions and 0 deletions
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8
day17/part1.js Normal file
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var input = 344;
var arr = [0];
var pos = 0;
for(var i = 1; i <= 2017; i++){
pos = (pos+input)%arr.length + 1;
arr.splice(pos, 0, i);
}
console.log(arr[pos+1]);

10
day17/part2.js Normal file
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var input = 344;
var len = 1;
var pos = 0;
for(var i = 1; i <= 50000000; i++){
pos = (pos+input)%len + 1;
len++;
if(pos == 1){
console.log(i);
}
}

41
day18/input.txt Normal file
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set i 31
set a 1
mul p 17
jgz p p
mul a 2
add i -1
jgz i -2
add a -1
set i 127
set p 622
mul p 8505
mod p a
mul p 129749
add p 12345
mod p a
set b p
mod b 10000
snd b
add i -1
jgz i -9
jgz a 3
rcv b
jgz b -1
set f 0
set i 126
rcv a
rcv b
set p a
mul p -1
add p b
jgz p 4
snd a
set a b
jgz 1 3
snd b
set f 1
add i -1
jgz i -11
snd a
jgz f -16
jgz a -19

39
day18/part1.js Normal file
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var pc = 0;
var registers = {};
var lastsnd = 0;
var instructions = require("fs").readFileSync("input.txt").toString().split("\n").filter((a)=>(a));
while((pc >= 0) && (pc < instructions.length)){
val = a => ((isNaN(parseInt(a))) ? (registers[a]) : (parseInt(a)));
var instruction = instructions[pc];
var parts = instruction.split(" ");
switch(parts[0]){
case "snd":
lastsnd = val(parts[1]);
break;
case "set":
registers[parts[1]] = val(parts[2]);
break;
case "add":
registers[parts[1]] += val(parts[2]);
break;
case "mul":
registers[parts[1]] *= val(parts[2]);
break;
case "mod":
registers[parts[1]] = registers[parts[1]] % val(parts[2]);
break;
case "rcv":
if(val(parts[1]) != 0){
console.log(lastsnd);
pc = instructions.length;
}
break;
case "jgz":
if(val(parts[1]) > 0){
pc += (val(parts[2]) - 1);
}
break;
}
pc++;
}

54
day18/part2.js Normal file
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var pc = [0,0];
var registers = [{p: 0}, {p: 1}];
var lastsnd = [0,0];
var queue = [[],[]];
var instructions = require("fs").readFileSync("input.txt").toString().split("\n").filter((a)=>(a));
var deadlock = 0;
var numSends = [0, 0];
while(deadlock < 2){
deadlock = 0;
for(var p = 0; p <= 1; p++){
if((pc[p] >= 0) && (pc[p] < instructions.length)){
val = a => ((isNaN(parseInt(a))) ? (registers[p][a]) : (parseInt(a)));
var instruction = instructions[pc[p]];
var parts = instruction.split(" ");
switch(parts[0]){
case "snd":
numSends[p]++;
queue[1-p].push(val(parts[1]));
break;
case "set":
registers[p][parts[1]] = val(parts[2]);
break;
case "add":
registers[p][parts[1]] += val(parts[2]);
break;
case "mul":
registers[p][parts[1]] *= val(parts[2]);
break;
case "mod":
registers[p][parts[1]] = registers[p][parts[1]] % val(parts[2]);
break;
case "rcv":
if(queue[p].length >= 1){
registers[p][parts[1]] = queue[p].splice(0,1)[0];
}
else{
pc[p]--;
deadlock++;
}
break;
case "jgz":
if(val(parts[1]) > 0){
pc[p] += (val(parts[2]) - 1);
}
break;
}
pc[p]++;
}
else{
deadlock++;
}
}
}
console.log(numSends[1]);

201
day19/input.txt Normal file
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|
+---------------------------------------------------------------------------+ +---------------------+ +---+ +-------------------------------------+
| | | | | | | | |
+---------------+ +---------------+ +-------|-------------------------------------+ | | | | +-----------+ +-----+
| | | | | | | | | | | | | | | | |
+---+ | | +-------+ | | +-----------------------------|-------------------------------------------|-----------+ | | | | | | +-----------+
| | | | | | | | | | | | | | | | | | | | | | | | |
+-----------+ | +-|-----------|-----------+ | +---+ | | | +-----------------------|-|---------------|-------|-----------|-----------------------+ |
| | | | | | | | | | | | | | | | | M | | | | | | | | |
| | | +-|-----------|---------------------|-----+ | | | | | +---------+ +-+ +---------------|-----------|---------------+ | +-+ |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | +-------------------------|---------------|---------------|-------|-------+ | | +-----+ +-----+ | | | | | | | +---+ +-+ | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +---|-+ | +---+ | +---------------------------------------|-------------|---------------------------|-----|-|---|-------|---------------------|-|-|---------+ |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +---+ | | | | | | | | +-------|-------|-------|---|-|-----|---------------|-----------|-------------|-|-----------|---|-|-|-|---+ | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | +-----------------------------|---------------------|---|-|-------------------|-|-----------|---|-|-|-|-------|-|---+
| | | | C | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +-|---|-----|-|-----------|-------|-----------------------------|-------------+ | | | | | | +-------------|-|---|-|-|---|---+ | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +-|---|-----|-------------|-------|-----------------------------|---------------|-------------------|-------|-----|---------|---|-+ | | | | | | | | | +-|---|---|-----|-+ |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| +---+ | | | | | | | | +-+ | +---------------------|---+ | | | | | | | +-|-----|-|-------------|-----------+ | | | | | | | | +---+
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | P |
| | | | | | | | | | | | | +-+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | +---|-+ | +---|-|-----|-----------|-+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | +---|---------+ | | +---|-|-|---|---------|-----------|-+ +-+ | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | +-------+ | | | | | | | | | | +-------+ | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +---|---|---|---------|-----+ +-----|-|-----|-------------------|-----|-------------|-|-------|-----------|-|-----|-------------------|-------|---------|---|-----------|-----------+ | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-------+ | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | +---+ | | | | | | | | | | | | | | | | | | | | | | | +-|-+ Y +-|-|-----+ | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | +-+ | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | +-|-------|-----|-|-----|-------------------|-------------|---------------|---------------------|-----|-|---------|-|---|-|-|-------|---|-------+ | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | +-----|---------|-------------|---------------|---|---|-|-|-----|-+ | | +-------|-+ +---|---|-------+ | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | +-------------------|-------|-------------|---+ | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | +-|-------------------|---|-----+ | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | +-----|-----|---------|-------|---|-|-------------------|---------------------------------------------|-|-----|---+ | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-|-+ | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | +-----|---|-|-|-----|-----|-+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | +-------|-|-----|-----|-+ | | +---+ | +---------|-------|---------|-|---|-----|-|-|-+ | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | +---|-|---------------|-|---|-|-----|-------------|-+ | | | +-----------|-------------|---------+ | | | | | +-----+ | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | +-------|---------------------------|---|-------|---+ +-------|---+ | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | +-+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | +-----|---------------|-|-----------|-|-----|-----|-|---|---|-----------------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | Q | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-----+ | | | | | | | | | +-+ | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | +-----------|---|---------|-|-----------------------+ | | | | | | | | | | | | | | | | +---------------------|-|-|-----------|----------E------+ | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | +---------|-|---|-----------|-|-|---+ | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | +---|-------|---|-+ | | +-|-------------|-|-----------|-----|---|-----+ | | +-+ | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | +-----------------|-|---|-----|-----------|---|-|---------------|-----|-------------------|-|-|-----|---------------+ | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | +---|-|---|-------|---|-----|---|-----------|---------------|-----|-------|---|-----|-----------------+ | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | +-------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | +---------------|-+ | | +-|-|-------------------|-----------|-----|-|-|-|---------------|-|-----------|-----|-|-|---------------------|-------------|-|-|-|-----|-|-+ | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | +-|---+ | | | | | | | | | | | | | | | +-|---|-----+ | +---|---|-|---+ | | | +-------|-|-------|---|-|---|-------|-----+ | +-------|-----+ | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +-+ | | | | | | | | | | +-----------|-|-|---|---|-------|---|---|---------------|-|-|---------+ | | +-|---|---------|-|-----------|-------|-------|-----|-----|-----|---+ | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-------|-|-+ | |
| | | | | | | | | | | | | | | | | | | | | | H | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | +-|---|-----+ | | | | | | | | | | | | | | | | +-|-------|---|-|-----------|-----------|-|---+ | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-----|-|-------|-|-----|---|-----|-------------------|-------|-+ | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-|-----+ | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | +---|-|---|-|---|-----------|---|-----|-|---------|---|-------------|-|-----|-----|-------|-------|-------|---|---|-|-|-|-----------------------------------|-------------+
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | +-|-------|---+ | | | | | | | | | | | | | | | | | | | | | | | | | +-----|-+ | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | +-------|---|-------|---------------|-|---------|-----|---|-----------|---|-|-|-|-----------------------------|-------|-|---------+ | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | +-+ | | | | | +---|-----|-----------------|-|-------+ | | | | | | | +-|-------+ | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +---|---|-------|-|---|-----------------+ | | | | +---+ | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | +-------|-|-|-|-------|---------|-|-------------|-|---|-|-----|-|-------------------|-------|-|-------|-------------+ | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | +-----+ | | | | | | | | | | | | +---------|-----+ | +-+ | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | +-|-----------|---|-|---|-------+ +-------|-----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-|-----+ | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | +---|-|---------|-|---------------+ | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | +---|---------|---|---------------|---|---|-----|---------|-------|---------------------|---|-------|-|-|-----+ | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | +-|-+ | | | | | | | | | | | | | | | | | | | | | | | | +-|---------|-------------------|-----------|---|-----|-------|-----|---------|-+ | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-----|-----+ | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +-|---|-|---|-|-----|---|-|---|-|-+ +---|-+ | | | | | | | +-------|-----+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +---+ | | | | | | | | | | | | | | | | | | | | | | | | | +---|-----|-------|-|-----------------|-|-|-|-|---|-|---|-|-|-|-------------------|-------|---|-----+ | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | +-----|---+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-------|---------|-------|-|-|-------|-----|-|-|-|---------|-----|-----+ | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | +-|-+ | +-------------|---|---|---------|-------------|-|---------|-------|---|-|-|-------|-|-|---------|-------|-|---|-----------|-----+ | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | +-----|-----|---------|-+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-----+ | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | +-------|-----------|-------|-|-------|-----+ | | | | | +---|-|-|---|-|-|-+ | | | | | | | | | | | | | | | |
| | | | | | | | | | | S | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | +---|-------|---------------------------------|---------|-----------------|---|-|---|-|---+ | | | +---------|-----|---------+ | | | | +-|-+
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
+-----|-|---|-|---|-----------|-----|-|---|-----|---------|---+ | | | | | +-------|-+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | +---|-----|---------|-----|---|-|-|-|-----|-------|-------|---|-----|-------+ +-|-|-------|-|---------------------|-|-|-------------------|-|-+ | | +-|---+ | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
+-------------|-|-|-|-----|---------|-----|-|-----|-|---------------------|---|-----|---------|-|-|-|-------|---------+ | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +-|-----|-|---|-|-----|---------------|---|---|---|---|-------|-------|-------|-----+ | | | | | | | | | | | | | +---|-+ | | | | | | | | | | | | | +-+ | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +---|---|-|-----------|---|-------|-------|---+ | | | | +-----------------------|---|-------|---+ +---------------|-----+ | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | +---+ | +-|---|-+ +-----|-----|-+ +-+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | +-|-----------|-|---|---+ | +-------|-+ | | | | | | | | | +---|-+ | | | | | | +-|-|-----|-----+ | | | | +---+ | +-+ | +-+ | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| +-----|-|V------|-|---|-|---------|-|-------|-----|-----------------|-------------------------|---------|-----|---------------------------+ | | | | +-|-+ | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +-|-|-----|-|-|-|---------------------|-|-------|---------------|---|-------|-------------|---------|-|-----------+ | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +-----+ | | | | | | +---|-----------|-|---------------|-------|---|-|-----------------------|---|-----------------|-----|-------|-|---|-|---|---+ | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +---------|-|---|-|-|-----------------|-|-------------------|-------|---|-------------------|---------|---------------------|-|-----|-------|---|-|---|-------------------|-|-----|---|-|-----+ |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| +-|-----|-----+ +---|---|-----------------|---+ | | | | | | | | | | | | | +-----------+ | | | | | | | | | | +-|---|-----|-----+ | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
+-|-|-----|---------|-|-+ | +-----|-|-+ | | | | | | | | | | | | | +-----------|---+ | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
+---------|---------|-|-----------------|-+ | | | +---|-------|---|---|---|---------------+ | | | | | +-|-------+ | | | | | | | | +---------------------|-+ | +-----+ |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | +---|---------+ +-+ | | | | | +---------|---------------+ | +-|---------------|-------|-----|---------------|-|-----|-------|-------|---------------------|-|---+ | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | +---+ | | +---|-----------|---|-----------|-----------|-|---------|-|-----------|-----------|-|---|-|-------------------------|-----|-------------+
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | +-------|-|-+ | | | | | | | | | | | | | +-----------|-----+ | +---+ | | | | | | | +---------------------+ +-------|-------+
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | +-----|-----|-+ | | +-|-----------|---|-----------------|---+ | | | +-----+ | +-------|-----------+ | | | | | +-------------|-------------+
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | +---------|---|---|---|-------|-|-|-----------|-|-|---------|-------------------+ | +---|-------------+ +-------------|-----+
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | +-----------|-----|-----------+ | | +-----|-|-|-------------------------|-----------+ +-|-|-|-------------+ |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +---------------------|-----|-------|-|---------|-----|-----------|-|-----|---|-+ +-------+ | +-|-|-+ | | | +---------------------------------+
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +-|-|---------|---|-------|---------|---|-|---------------|-------|---------|---------|-|-|-|---------|---------------------|-------|---------+ | | +-+
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | +-------|-----|-----------|---|---|---+ | | | | | | +-+ +---------|---------------+ | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | +---+ | | | | | | | | | | | | | +---------|-|-|-------|---------+ | | +---------|-----+ +-+ | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | +---------|-+ | | | | | +-----+ | +-----|-------+ +-+ +---------------+ | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | +---------|-------|---------|---|---|-----|-----------|---------------------------------------------|-------+ +-------------------------------------|---------------+
| | | | | | | | | | | | | | | | | | | | | | | |
| | | +---------+ | +-------------|-----------|---------|---|-------------|-------------------------------------------------+ | | | | |
| | | | | | | | | | | | | | | | | | | |
| | | | +---------+ +---------|---+ +---|---------+ +-+ +---------------------------------------------+ | | | | |
| | | | | | | | | | | | | | | | | |
+-+ +-------------------------|-----------+ +-+ +---|---+ | +---------------------------------------------------------------+ +-----+ | +-------------+
| | | | | |
+-----+ +-------+ +--------------------------------------------B----------------------------------------------------------------------+

35
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var grid = require("fs").readFileSync("input.txt").toString().split("\n").map((a)=>(a.split("")));
var x = 163;
var y = 0;
var dirs = [[0, 1], [1, 0], [-1, 0], [0, -1]];
var dir = 0;
var visited = [];
var end = false;
var letters = [];
while(!end){
if(grid[y][x].match("[A-Z]")){
letters.push(grid[y][x]);
}
visited.push((y*201) + x);
if(grid[y][x] == "+"){
var changed = false;
var i = 0;
while(!changed){
if(visited.indexOf(((y + dirs[i][1]) * 201) + (x + dirs[i][0])) == -1){
//not visited before
if(grid[y+dirs[i][1]][x+dirs[i][0]] != " "){
//not empty
changed = true;
dir = i;
}
}
i++;
}
}
x += dirs[dir][0];
y += dirs[dir][1];
if(grid[y][x] == " "){
end = true;
}
}
console.log(letters.join(""));

37
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var grid = require("fs").readFileSync("input.txt").toString().split("\n").map((a)=>(a.split("")));
var x = 163;
var y = 0;
var dirs = [[0, 1], [1, 0], [-1, 0], [0, -1]];
var dir = 0;
var visited = [];
var end = false;
var letters = [];
var moves = 0;
while(!end){
if(grid[y][x].match("[A-Z]")){
letters.push(grid[y][x]);
}
visited.push((y*201) + x);
if(grid[y][x] == "+"){
var changed = false;
var i = 0;
while(!changed){
if(visited.indexOf(((y + dirs[i][1]) * 201) + (x + dirs[i][0])) == -1){
//not visited before
if(grid[y+dirs[i][1]][x+dirs[i][0]] != " "){
//not empty
changed = true;
dir = i;
}
}
i++;
}
}
x += dirs[dir][0];
y += dirs[dir][1];
if(grid[y][x] == " "){
end = true;
}
moves++;
}
console.log(moves);

1000
day20/input.txt Normal file
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var input = require("fs").readFileSync("input.txt").toString();
var inputjson = "[{" + input.replace(/([a-z])=</g, "\"$1\": [").replace(/>/g, "]").replace(/\n/g, "},\n{").slice(0,-3) + "]";
var objects = JSON.parse(inputjson);
for(var i = 0; i < 1000; i++){
objects = objects.map(o=>{
o.v = o.v.map((v,x)=>(v + o.a[x]));
o.p = o.p.map((p,x)=>(p + o.v[x]));
return o;
});
}
var locations = objects.map(o=>(o.p));
var distances = locations.map((a)=>(a.map((b)=>(Math.abs(b))).reduce((b,c)=>(b+c))));
var maxdist = Math.min.apply(null, distances);
console.log(maxdist);
console.log(distances.indexOf(maxdist));

14
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var input = require("fs").readFileSync("input.txt").toString();
var inputjson = "[{" + input.replace(/([a-z])=</g, "\"$1\": [").replace(/>/g, "]").replace(/\n/g, "},\n{").slice(0,-3) + "]";
var objects = JSON.parse(inputjson);
for(var i = 0; i < 10000; i++){
objects = objects.map(o=>{
o.v = o.v.map((v,x)=>(v + o.a[x]));
o.p = o.p.map((p,x)=>(p + o.v[x]));
return o;
});
var locations = objects.map(o=>(o.p));
var locationsStr = locations.map((a)=>(a.join(",")));
objects = objects.filter((a)=>(locationsStr.filter((b)=>(b==a.p.join(","))).length == 1));
console.log(objects.length);
}

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day21/input.txt Normal file
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../.. => ..#/#../.#.
#./.. => #../#../...
##/.. => ###/#.#/#..
.#/#. => ###/##./.#.
##/#. => .../.#./..#
##/## => ##./#.#/###
.../.../... => ##../.#../#.#./....
#../.../... => ..../##.#/...#/##.#
.#./.../... => ###./####/#.../#..#
##./.../... => ###./.##./...#/..##
#.#/.../... => .###/.##./#.../#.##
###/.../... => ##.#/#..#/#.#./#.##
.#./#../... => #.#./.###/#.../#.##
##./#../... => #.../####/#.##/....
..#/#../... => #.##/..#./...#/...#
#.#/#../... => #.##/####/.#.#/#.#.
.##/#../... => #.../##../##.#/.##.
###/#../... => ..../#.#./.###/#...
.../.#./... => .#.#/#..#/##../#.##
#../.#./... => ###./.###/.#.#/..#.
.#./.#./... => ..##/.##./..##/.#.#
##./.#./... => ..#./##../###./...#
#.#/.#./... => ..##/.##./.###/###.
###/.#./... => ..#./.###/###./#.##
.#./##./... => ###./..../.#../#...
##./##./... => .#.#/##../##.#/...#
..#/##./... => ##.#/.##./.###/..##
#.#/##./... => .###/..#./#.##/####
.##/##./... => ##.#/..#./..##/###.
###/##./... => ..../.#.#/.#../#...
.../#.#/... => ###./.#.#/.#../#.##
#../#.#/... => ####/#..#/..../....
.#./#.#/... => #.../..##/#.##/#.#.
##./#.#/... => #.#./###./##../#.#.
#.#/#.#/... => ...#/.##./.##./.#..
###/#.#/... => ..../.##./####/#.#.
.../###/... => .###/.#../.###/#.##
#../###/... => ..##/..##/.##./##..
.#./###/... => .#.#/..#./..##/##.#
##./###/... => ...#/#.##/#.#./##.#
#.#/###/... => #.##/.##./...#/###.
###/###/... => ##../...#/..##/####
..#/.../#.. => #.##/#.../.#../#.#.
#.#/.../#.. => .##./.##./.#.#/.##.
.##/.../#.. => .#.#/#.##/...#/##.#
###/.../#.. => ##../..#./...#/##..
.##/#../#.. => ##../..##/#..#/#..#
###/#../#.. => ##../..#./#.#./....
..#/.#./#.. => .##./##.#/##../####
#.#/.#./#.. => ####/...#/.#.#/..#.
.##/.#./#.. => .#.#/..#./##.#/.#..
###/.#./#.. => #.../#.##/..../##.#
.##/##./#.. => #.#./#.#./#.##/#.#.
###/##./#.. => ...#/###./.##./.#.#
#../..#/#.. => ####/####/..../.##.
.#./..#/#.. => #.##/...#/..#./####
##./..#/#.. => ..#./#.../..##/####
#.#/..#/#.. => #.../#.##/#.##/..##
.##/..#/#.. => ####/..../##../####
###/..#/#.. => ..../##.#/.##./####
#../#.#/#.. => ...#/..##/###./#..#
.#./#.#/#.. => #..#/..#./.###/##.#
##./#.#/#.. => ###./####/#.##/..#.
..#/#.#/#.. => ##../##.#/..##/.##.
#.#/#.#/#.. => .#.#/.##./#.../##.#
.##/#.#/#.. => .#.#/#..#/.##./..#.
###/#.#/#.. => ...#/.#../.##./##.#
#../.##/#.. => ###./##../#.#./####
.#./.##/#.. => .#../##../#.#./.#.#
##./.##/#.. => ##.#/.#../.#.#/####
#.#/.##/#.. => ####/.#.#/..../....
.##/.##/#.. => ####/##../#..#/####
###/.##/#.. => .###/##.#/.#../#.##
#../###/#.. => #..#/###./####/.#.#
.#./###/#.. => ..##/##../##.#/.#.#
##./###/#.. => #..#/.#../####/...#
..#/###/#.. => ##../##.#/...#/#..#
#.#/###/#.. => ..#./.##./#..#/....
.##/###/#.. => #..#/#.../..../.#..
###/###/#.. => ..#./#.##/.##./#...
.#./#.#/.#. => .#.#/.##./##.#/.##.
##./#.#/.#. => #..#/.###/.#.#/.##.
#.#/#.#/.#. => #.../##../#.../.###
###/#.#/.#. => ###./.###/###./....
.#./###/.#. => .#../####/...#/##..
##./###/.#. => ####/###./..../....
#.#/###/.#. => ...#/.###/..../####
###/###/.#. => ..../#.../..#./.###
#.#/..#/##. => #.#./#.../####/#.##
###/..#/##. => .#.#/#..#/.###/#...
.##/#.#/##. => ..##/..#./..../##..
###/#.#/##. => #.#./##.#/####/#..#
#.#/.##/##. => ..../.#../#.#./##.#
###/.##/##. => ..../..../.#../##.#
.##/###/##. => #.#./.###/#.#./#.##
###/###/##. => ##.#/##.#/.###/..#.
#.#/.../#.# => #..#/.#../#.../...#
###/.../#.# => ##../.#../##.#/..#.
###/#../#.# => ..##/#.#./####/.#..
#.#/.#./#.# => ...#/...#/#..#/#.#.
###/.#./#.# => ..../####/.##./.#.#
###/##./#.# => #..#/.#.#/..##/####
#.#/#.#/#.# => #.#./..#./...#/.#..
###/#.#/#.# => ...#/##.#/.###/.#..
#.#/###/#.# => .#.#/###./.#../.##.
###/###/#.# => ...#/.###/.#.#/###.
###/#.#/### => #.##/.#.#/...#/.#..
###/###/### => ..##/.#../#.#./.#..

66
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var maps = {};
for(var map of require("fs").readFileSync("input.txt").toString().split("\n").filter(a=>(a))){
map = map.split(" => ");
maps[map[0]] = map[1];
}
for(var i = 0; i < 1; i++){
for(var input of Object.keys(maps)){
var lines = input.split("/");
rotated = input.split("/").map((line,y)=>(line.split("").map((a, x)=>(lines[lines.length-1-x][y])).join(""))).join("/");
maps[rotated] = maps[input];
}
}
for(var input of Object.keys(maps)){
maps[input.split("/").reverse().join("/")] = maps[input];
}
for(var input of Object.keys(maps)){
maps[input.split("/").map(line=>(line.split("").reverse().join(""))).join("/")] = maps[input];
}
function runRound(textInput){
var oldGrid = textInput.split("/").map((a)=>(a.split("")));
var sideLen = oldGrid[0].length;
if(sideLen%2 == 0){
var sideSquares = sideLen/2;
var squareLen = 2;
var newSquareLen = 3;
}
else if(sideLen%3 == 0){
var sideSquares = sideLen/3;
var squareLen = 3;
var newSquareLen = 4;
}
var newGrid = [];
for(var i = 0; i < (sideSquares * newSquareLen); i++){
newGrid[i] = [];
}
for(var x = 0; x < sideSquares; x++){
for(var y = 0; y < sideSquares; y++){
var section = [];
for(var i = 0; i < squareLen; i++){
section.push(oldGrid[(y*squareLen) + i].slice(x*squareLen, (x+1)*squareLen));
}
var sectionText = section.map((a)=>(a.join(""))).join("/");
var newSectionText = maps[sectionText];
var newSection = newSectionText.split("/").map(a=>(a.split("")));
for(var x1 = 0; x1 < newSquareLen; x1++){
for(var y1= 0; y1 < newSquareLen; y1++){
newGrid[(y*newSquareLen) + y1][(x*newSquareLen) + x1] = newSection[y1][x1];
}
}
}
}
return newGrid.map(a=>(a.join(""))).join("/")
}
var currentGrid = ".#./..#/###";
var iters = 5;
for(var i = 0; i < iters; i++){
currentGrid = runRound(currentGrid);
}
console.log(currentGrid.split("").filter(a=>(a=="#")).length);

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var maps = {};
for(var map of require("fs").readFileSync("input.txt").toString().split("\n").filter(a=>(a))){
map = map.split(" => ");
maps[map[0]] = map[1];
}
for(var i = 0; i < 1; i++){
for(var input of Object.keys(maps)){
var lines = input.split("/");
rotated = input.split("/").map((line,y)=>(line.split("").map((a, x)=>(lines[lines.length-1-x][y])).join(""))).join("/");
maps[rotated] = maps[input];
}
}
for(var input of Object.keys(maps)){
maps[input.split("/").reverse().join("/")] = maps[input];
}
for(var input of Object.keys(maps)){
maps[input.split("/").map(line=>(line.split("").reverse().join(""))).join("/")] = maps[input];
}
function runRound(textInput){
var oldGrid = textInput.split("/").map((a)=>(a.split("")));
var sideLen = oldGrid[0].length;
if(sideLen%2 == 0){
var sideSquares = sideLen/2;
var squareLen = 2;
var newSquareLen = 3;
}
else if(sideLen%3 == 0){
var sideSquares = sideLen/3;
var squareLen = 3;
var newSquareLen = 4;
}
var newGrid = [];
for(var i = 0; i < (sideSquares * newSquareLen); i++){
newGrid[i] = [];
}
for(var x = 0; x < sideSquares; x++){
for(var y = 0; y < sideSquares; y++){
var section = [];
for(var i = 0; i < squareLen; i++){
section.push(oldGrid[(y*squareLen) + i].slice(x*squareLen, (x+1)*squareLen));
}
var sectionText = section.map((a)=>(a.join(""))).join("/");
var newSectionText = maps[sectionText];
var newSection = newSectionText.split("/").map(a=>(a.split("")));
for(var x1 = 0; x1 < newSquareLen; x1++){
for(var y1= 0; y1 < newSquareLen; y1++){
newGrid[(y*newSquareLen) + y1][(x*newSquareLen) + x1] = newSection[y1][x1];
}
}
}
}
return newGrid.map(a=>(a.join(""))).join("/")
}
var currentGrid = ".#./..#/###";
var iters = 18;
for(var i = 0; i < iters; i++){
currentGrid = runRound(currentGrid);
}
console.log(currentGrid.split("").filter(a=>(a=="#")).length);

25
day22/input.txt Normal file
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..#..##...##.######.##...
..#...#####..#.#####..#..
...##.#..##.#.##....#...#
#.#.#.#..###...#....##..#
..#..#####.....##..#.#..#
.##.#####.#.....###.#..#.
##..####...#.##.#...##...
###.#.#####...##.#.##..#.
#.##..##.#....#.#..#.##..
###.######......####..#.#
###.....#.##.##.######..#
...####.###.#....#..##.##
#..####.#.....#....###.#.
#..##..#.####.#.##..#.#..
#..#.#.##...#...#####.##.
#.###..#.##.#..##.#######
...###..#..####.####.#.#.
.#..###..###.#....#######
.####..##.#####.#.#..#.#.
#.#....##.....##.##.....#
....####.....#..#.##..##.
######..##..#.###...###..
..##...##.....#..###.###.
##.#.#..##.#.#.##....##.#
.#.###..##..#....#...##.#

31
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var grid = require("fs").readFileSync("input.txt").toString().split("\n").filter(a=>(a)).reverse().map(a=>(a.split("")));
var dirs = [[0, 1], [1, 0], [0, -1], [-1, 0]];
var dir = 0;
var x = Math.floor(grid.length/2);
var y = Math.floor(grid.length/2);
var numInfected = 0;
for(var i = 0; i < 10000; i++){
var clean = true;
if(grid[y]){
if(grid[y][x] == "#"){
clean = false;
}
}
else{
grid[y] = [];
}
if(clean){
grid[y][x] = "#";
numInfected++;
dir--;
}
else{
grid[y][x] = ".";
dir++;
}
dir = (dir+4)%4;
x += dirs[dir][0];
y += dirs[dir][1];
}
console.log(numInfected);

32
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var grid = require("fs").readFileSync("input.txt").toString().split("\n").filter(a=>(a)).reverse().map(a=>(a.split("")));
var dirs = [[0, 1], [1, 0], [0, -1], [-1, 0]];
var dir = 0;
var x = Math.floor(grid.length/2);
var y = Math.floor(grid.length/2);
var numInfected = 0;
for(var i = 0; i < 10000000; i++){
var clean = true;
if(grid[y]){
if(!grid[y][x]){
grid[y][x] = ".";
}
}
else{
grid[y] = [];
grid[y][x] = ".";
}
var states = [".", "W", "#", "F"];
var dirChanges = [-1, 0, 1, 2];
dir += dirChanges[states.indexOf(grid[y][x])];
grid[y][x] = states[(states.indexOf(grid[y][x])+1) % 4];
if(grid[y][x] == "#"){
numInfected++;
}
dir = (dir+4)%4;
x += dirs[dir][0];
y += dirs[dir][1];
}
console.log(numInfected);

32
day23/input.txt Normal file
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set b 540
set c b
jnz a 2
jnz 1 5
mul b 100
sub b -100000
set c b
sub c -17000
set f 1
set d 2
set e 2
set g d
mul g e
sub g b
jnz g 2
set f 0
sub e -1
set g e
sub g b
jnz g -8
sub d -1
set g d
sub g b
jnz g -13
jnz f 2
sub h -1
set g b
sub g c
jnz g 2
jnz 1 3
sub b -17
jnz 1 -23

30
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var pc = 0;
var registers = {a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, g: 0, h: 0};
var instructions = require("fs").readFileSync("input.txt").toString().split("\n").filter((a)=>(a));
var numMul = 0;
while((pc >= 0) && (pc < instructions.length)){
val = a => ((isNaN(parseInt(a))) ? (registers[a]) : (parseInt(a)));
var instruction = instructions[pc];
var parts = instruction.split(" ");
var pcstart = pc;
switch(parts[0]){
case "set":
registers[parts[1]] = val(parts[2]);
break;
case "sub":
registers[parts[1]] -= val(parts[2]);
break;
case "mul":
numMul++;
registers[parts[1]] *= val(parts[2]);
break;
case "jnz":
if(val(parts[1]) != 0){
pc += (val(parts[2]) - 1);
}
break;
}
pc++;
}
console.log(numMul);
console.log(registers);

13
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var num = 106700;
var end = 123700;
var numNotPrime = 0;
while(num <= end){
for(var i = 2; i <= Math.sqrt(num); i++){
if(num%i == 0){
i = num;
numNotPrime++;
}
}
num += 17;
}
console.log(numNotPrime);

56
day24/input.txt Normal file
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31/13
34/4
49/49
23/37
47/45
32/4
12/35
37/30
41/48
0/47
32/30
12/5
37/31
7/41
10/28
35/4
28/35
20/29
32/20
31/43
48/14
10/11
27/6
9/24
8/28
45/48
8/1
16/19
45/45
0/4
29/33
2/5
33/9
11/7
32/10
44/1
40/32
2/45
16/16
1/18
38/36
34/24
39/44
32/37
26/46
25/33
9/10
0/29
38/8
33/33
49/19
18/20
49/39
18/39
26/13
19/32

25
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var components = require("fs").readFileSync("input.txt").toString().split("\n").filter(a=>(a)).map(a=>(a.split("/").map(b=>(parseInt(b)))));
var finalBridges = [];
function getLongerChains(state){
var additions = components.filter(a=>(state.components.indexOf(a) == -1)).filter(a=>(a[0] == state.end || a[1] == state.end));
if(additions.length == 0){
finalBridges.push(state.components)
}
else{
additions.forEach(a=>{
var newState = {
components: state.components.slice(),
end: a.filter((b,i)=>(i!=a.indexOf(state.end)))[0]
}
newState.components.push(a);
//console.log(newState);
getLongerChains(newState);
});
}
}
getLongerChains({
components: [],
end: 0
});
var bridgeLengths = finalBridges.map(bridge=>(bridge.map(a=>(a[0] + a[1])).reduce((a,b)=>(a+b))));
console.log(bridgeLengths.reduce((g, b)=>((b>g || g==null) ? b : g),null));

28
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var components = require("fs").readFileSync("input.txt").toString().split("\n").filter(a=>(a)).map(a=>(a.split("/").map(b=>(parseInt(b)))));
var finalBridges = [];
function getLongerChains(state){
var additions = components.filter(a=>(state.components.indexOf(a) == -1)).filter(a=>(a[0] == state.end || a[1] == state.end));
if(additions.length == 0){
finalBridges.push(state.components)
}
else{
additions.forEach(a=>{
var newState = {
components: state.components.slice(),
end: a.filter((b,i)=>(i!=a.indexOf(state.end)))[0]
}
newState.components.push(a);
getLongerChains(newState);
});
}
}
getLongerChains({
components: [],
end: 0
});
var bridgeLengths = finalBridges.map(bridge=>(bridge.length));
var maxLength = bridgeLengths.reduce((g, b)=>((b>g || g==null) ? b : g),null);
var maxLengthBridges = finalBridges.filter(bridge=>(bridge.length == maxLength));
var bridgeStrengths = maxLengthBridges.map(bridge=>(bridge.map(a=>(a[0] + a[1])).reduce((a,b)=>(a+b))));
var maxStrength = bridgeStrengths.reduce((g, b)=>((b>g || g==null) ? b : g),null);
console.log(maxStrength);

36
day25/part1.js Normal file
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var state = "A";
var tape = {};
var pointer = 0;
var actions = {
A: [
[1, 1, "B"], [0, -1, "B"]
],
B: [
[0, 1, "C"], [1, -1, "B"]
],
C: [
[1, 1, "D"], [0, -1, "A"]
],
D: [
[1, -1, "E"], [1, -1, "F"]
],
E: [
[1, -1, "A"], [0, -1, "D"]
],
F: [
[1, 1, "A"], [1, -1, "E"]
],
}
aactions = {
A: [[1,1,"B"],[0,-1,"B"]],
B: [[1,-1,"A"],[1,1,"A"]],
}
for(var i = 0; i < 12629077; i++){
var action = actions[state][tape[pointer] ? 1 : 0];
//console.log(state, pointer, tape);
tape[pointer] = action[0];
pointer += action[1];
state = action[2];
}
console.log(tape);
console.log(Object.keys(tape).map(a=>(tape[a])).reduce((a,b)=>(a+b)));