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Diophantus of Alexandria was an Egypt mathematician living in Alexandria. He was one of the first mathematicians to study equations where variables we 阅读全文
posted @ 2019-07-24 22:24
black_hole6
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You've got a string s = s1s2... s|s| of length |s|, consisting of lowercase English letters. There also are q queries, each query is described by two 阅读全文
posted @ 2019-07-24 21:24
black_hole6
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Problem Description One day, Y_UME got an integer N and an interesting program which is shown below:Y_UME wants to play with this program. Firstly, he 阅读全文
posted @ 2019-07-24 20:41
black_hole6
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