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There is a robot trapped in the maze. Now you have to send out some instructions, telling it how to reach its destination. The maze is an M * N grid. Some of the cells are empty, while others are occ

Ruratania is just entering capitalism and is establishing new enterprising activities in many fields including transport. The transportation company TransRuratania is starting a new express train from

Given a set of sticks of various lengths, is it possible to join them end-to-end to form a square? The first line of input contains N, the number of test cases. Each test case begins with an integer

D. Phillip and Trainstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputThe mobile application store has a new game called "Subway Roller".The protago...