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Tour operator Your Personal Holiday organises guided bus trips across the Benelux. Every day the bus moves from one city S to another city F. On this 阅读全文
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Christmas is coming to KCM city. Suby the loyal civilian in KCM city is preparing a big neat Christmas tree. The simple structure of the tree is shown 阅读全文
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大家一定觉的运动以后喝可乐是一件很惬意的事情，但是seeyou却不这么认为。因为每次当seeyou买了可乐以后，阿牛就要求和seeyou一起分享这一瓶可乐，而且一定要喝的和seeyou一样多。但seeyou的手中只有两个杯子，它们的容量分别是N 毫升和M 毫升 可乐的体积为S （S include 阅读全文
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Assume the coasting is an infinite straight line. Land is in one side of coasting, sea in the other. Each small island is a point locating in the sea 阅读全文
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划分数：把n个无区别的物品划分成不超过m组。 dp[i][j]=j的i划分的总数。 dp[i[j]=dp[i][j i]+dp[i 1][j] 即：将j个物品分成i份，有两种情况：每份划分都大于等于1 dp[i][j i]; 存在有一份以上用0划分dp[i 1][j] int main() { in 阅读全文
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FatMouse's Speed FatMouse believes that the fatter a mouse is, the faster it runs. To disprove this, you want to take the data on a collection of mice 阅读全文
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``` include include include using namespace std; const int INF=0x3f3f3f3f; const int maxn=10005; int perm[maxn]; bool used[maxn]; int n; void permutat 阅读全文
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题目描述 我们定义一个圆 C 为以原点 (0, 0) 为中心的单位圆(半径为 1 的圆)。给定在 C 圆周上相异的两点 A, B。请问由 A 出发，沿着圆周走到 B，是顺时针走比较近，还是逆时针走比较近呢？ C 的圆周上的所有点都可以用 (cos(t), sin(t)) 来表示，其中 t 的物理意义 阅读全文
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Iahub and Sorin are the best competitive programmers in their town. However, they can't both qualify to an important contest. The selection will be ma 阅读全文
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A. Water The Garden time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output It is winter now, and Max 阅读全文