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Problem description Little Petya very much likes arrays consisting of n integers, where each of them is in the range from 1 to 109, inclusive. Recentl 阅读全文
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Problem description Vasya plays the sleuth with his friends. The rules of the game are as follows: those who play for the first time, that is Vasya is 阅读全文
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Problem description It is the middle of 2018 and Maria Stepanovna, who lives outside Krasnokamensk (a town in Zabaikalsky region), wants to rent three 阅读全文