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B. Two Buttons time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output B. Two Buttons time limit 阅读全文
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Given a n × n matrix A and a positive integer k, find the sum S = A + A2 + A3 + … + Ak. Given a n × n matrix A and a positive integer k, find the sum 阅读全文
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B. Ilya and Queries time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output B. Ilya and Queries 阅读全文
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Red and Black Description There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a bla 阅读全文
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A. The Contest time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A. The Contest time limit 阅读全文