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Polycarp loves geometric progressions very much. Since he was only three years old, he loves only the progressions of length three. He also has a favo... 阅读全文
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Berland National Library has recently been built in the capital of Berland. In addition, in the library you can take any of the collected works of Ber... 阅读全文
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Problem DescriptionAs we all kown, MZL hates the endless loop deeply, and he commands you to solve this problem to end the loop.You are given an undir... 阅读全文
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Problem DescriptionThere arensoda conveniently labeled by1,2,…,n. beta, their best friends, wants to invite some soda to go hiking. Thei-th soda will ... 阅读全文
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set go= cin nu ts=4 sw=4 sts=4 noswapfile nobackup acd et cursorlineset backspace=eol,start,indentsyntax onset lines=90 columns=80map :!g++ -o2 -std=... 阅读全文