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Problem description A boy Bob likes to draw. Not long ago he bought a rectangular graph (checked) sheet with n rows and m columns. Bob shaded some of 阅读全文
posted @ 2018-06-04 23:56
霜雪千年
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Problem description One day little Vasya found mom's pocket book. The book had n names of her friends and unusually enough, each name was exactly m le 阅读全文
posted @ 2018-06-04 23:41
霜雪千年
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Problem description During the break the schoolchildren, boys and girls, formed a queue of n people in the canteen. Initially the children stood in th 阅读全文
posted @ 2018-06-04 23:12
霜雪千年
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Problem description Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the 阅读全文
posted @ 2018-06-04 22:44
霜雪千年
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Problem description George has recently entered the BSUCP (Berland State University for Cool Programmers). George has a friend Alex who has also enter 阅读全文
posted @ 2018-06-04 22:31
霜雪千年
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