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Problem DescriptionThe Sky is Sprite.The Birds is Fly in the Sky.The Wind is Wonderful.Blew Throw the TreesTrees are Shaking, Leaves a... 阅读全文
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Description两只青蛙在网上相识了，它们聊得很开心，于是觉得很有必要见一面。它们很高兴地发现它们住在同一条纬度线上，于是它们约定各自朝西跳，直到碰面为止。可是它们出发之前忘记了一件很重要的事情，既没有问清楚对方的特征，也没有约定见面的具体位置。不过青蛙们都是很... 阅读全文
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There is an interesting and simple one person game. Suppose there is a number axis under your feet. You are at point A at first and yo... 阅读全文
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Famil Door’s City map looks like a tree (undirected connected acyclic graph) so other people call it Treeland. There are n intersectio... 阅读全文
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Problem DescriptionThere are no days and nights on byte island, so the residents here can hardly determine the length of a single day.... 阅读全文
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The 11th Zhejiang Provincial Collegiate Programming Contest is coming! As a problem setter, Edward is going to arrange the order of th... 阅读全文
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Problem DescriptionZZZ is an enthusiastic ACMer and he spends lots of time on training. He always stays up late for training. He needs... 阅读全文
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Problem Description在双胞胎兄弟Eric与R.W的生日会上，他们共收到了N个礼物，生日过后他们决定分配这N个礼物(numv+numw=N)。对于每个礼物他们俩有着各自心中的价值vi和wi，他们要求各自分到的礼物数目|numv-numw|#includ... 阅读全文