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As Fast As Possible On vacations n pupils decided to go on excursion and gather all together. They need to overcome the path with the length l meters. 阅读全文
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Connecting Universities Connecting Universities Treeland is a country in which there are n towns connected by n - 1 two-way road such that it's possib 阅读全文
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They Are Everywhere They Are Everywhere Sergei B., the young coach of Pokemons, has found the big house which consists of n flats ordered in a row fro 阅读全文
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Cells Not Under Attack Cells Not Under Attack Vasya has the square chessboard of size n × n and m rooks. Initially the chessboard is empty. Vasya will 阅读全文
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吃饭 题目描述 桐桐放学了，在学校食堂吃起了饭…．这里的饭十分好吃，但是桐桐的钱有限且肚子空间有限（^_^），虽然每种饭有无限多，但他只能吃部分，且每一种饭可增加一定的能量。桐桐觉得自己有点胖，于是下了一个决心：我今天只吃第二多能量值的饭！请你输出他所吃的饭的能量值。注意：第二多能量值的饭一定不等于 阅读全文