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D. Time to go back time limit per test：1 second memory limit per test：256 megabytes input：standard input output：standard output D. Time to go back tim 阅读全文
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C. Palindrome Again !! time limit per test：1 second memory limit per test：64 megabytes input：standard input output：standard output Given string with N 阅读全文
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B. New Job time limit per test：1 second memory limit per test：64 megabytes input：standard input output：standard output This is the first day for you a 阅读全文
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A. Who is the winner? time limit per test:1 second memory limit per test:64 megabytes input:standard input output:standard output A big marathon is he 阅读全文