随笔分类 - 刷题----codeforces
摘要：There are n pictures delivered for the new exhibition. The i-th painting has beauty ai. We know that a visitor becomes happy every time he passes from
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摘要：Friends are going to play console. They have two joysticks and only one charger for them. Initially first joystick is charged at a1 percent and second
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摘要：A big marathon is held on Al-Maza Road, Damascus. Runners came from all over the world to run all the way along the road in this big marathon day. The
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摘要：Some natural number was written on the board. Its sum of digits was not less than k. But you were distracted a bit, and someone changed this number to
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摘要：Two boys decided to compete in text typing on the site "Key races". During the competition, they have to type a text consisting of s characters. The f
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摘要：A. The Useless Toy time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Walking through the street
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摘要：It's hard times now. Today Petya needs to score 100 points on Informatics exam. The tasks seem easy to Petya, but he thinks he lacks time to finish th
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摘要：It's one more school day now. Sasha doesn't like classes and is always bored at them. So, each day he invents some game and plays in it alone or with
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摘要：There are two popular keyboard layouts in Berland, they differ only in letters positions. All the other keys are the same. In Berland they use alphabe
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摘要：Array of integers is unimodal, if: it is strictly increasing in the beginning; after that it is constant; after that it is strictly decreasing. The fi
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摘要：Ivan had string s consisting of small English letters. However, his friend Julia decided to make fun of him and hid the string s. Ivan preferred makin
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摘要：Polycarp has a checkered sheet of paper of size n × m. Polycarp painted some of cells with black, the others remained white. Inspired by Malevich's "B
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摘要：In a small restaurant there are a tables for one person and b tables for two persons. It it known that n groups of people come today, each consisting
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摘要：Erelong Leha was bored by calculating of the greatest common divisor of two factorials. Therefore he decided to solve some crosswords. It's well known
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摘要：Holidays have finished. Thanks to the help of the hacker Leha, Noora managed to enter the university of her dreams which is located in a town Pavlopol
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摘要：On his trip to Luxor and Aswan, Sagheer went to a Nubian market to buy some souvenirs for his friends and relatives. The market has some strange rules
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