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Facebook Hacker Cup, qualification, "Square finder"

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RRestuta
Last edited Nov 24, 2013
Created on Nov 24, 2013

The example shows a line-by-line solution to the Facebook Hacker Cup "Square finder" problem, reading a grid from a text file and printing either 'YES' or 'NO' for each test case. It uses Python’s built-in `open`, `readline`, and `read` functions to parse input, then iterates through nested loops to detect a contiguous square of `#` characters. The logic tracks the first sharp and its length, validating each cell against the expected square bounds with a helper function. No visualization or plotting library is used; output is plain text to the console.

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