diff --git a/05/1.py b/05/1.py
new file mode 100644
index 0000000..941ce82
--- /dev/null
+++ b/05/1.py
@@ -0,0 +1,6 @@
+from functools import reduce
+from math import floor, ceil
+shuffle = lambda l, h, s: reduce(lambda a, b: (a[0], floor((a[0]+a[1])/2)) if b in "FL" else (ceil((a[0]+a[1])/2), a[1]), s, (l, h))[0]
+lines = [l for l in open("input", "r").read().split("\n") if l]
+ids = [shuffle(0, 127, l[:7]) * 8 + shuffle(0, 7, l[7:]) for l in lines]
+print(max(ids))
diff --git a/05/2.py b/05/2.py
new file mode 100644
index 0000000..015bf22
--- /dev/null
+++ b/05/2.py
@@ -0,0 +1,6 @@
+from functools import reduce
+from math import floor, ceil
+shuffle = lambda l, h, s: reduce(lambda a, b: (a[0], floor((a[0]+a[1])/2)) if b in "FL" else (ceil((a[0]+a[1])/2), a[1]), s, (l, h))[0]
+lines = [l for l in open("input", "r").read().split("\n") if l]
+ids = sorted([shuffle(0, 127, l[:7]) * 8 + shuffle(0, 7, l[7:]) for l in lines])
+print([int((a+b)/2) for (a, b) in zip(ids, ids[1:]) if b - a == 2][0])
diff --git a/05/input b/05/input
new file mode 100644
index 0000000..6582563
--- /dev/null
+++ b/05/input
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+BFFFFFFRLL
+BFFBBBFRLL
+FBFFBBBLRR
+BBFFBBBRLR
+FBFFFFFLRR
+BBFFBFFLLL
+FBFFFFBLRR
+BBFFBFBRLR
+FBFBFFFRRL
+FBBFFBFLLL