4 lines
184 B
JavaScript
4 lines
184 B
JavaScript
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var strs = require("fs").readFileSync("input.txt").toString().split("\n").filter((a)=>(a)).join(",");
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var m = strs.match(/,([^,]*)[a-z]([^,]*),.*,\1[a-z]\2,/);
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console.log(m[1]+m[2]);
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