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Problem Description Given three strings, you are to determine whether the third string can be formed by combining the characters in the first two stri 阅读全文
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Problem Description 一个规则的实心十二面体，它的 20个顶点标出世界著名的20个城市，你从一个城市出发经过每个城市刚好一次后回到出发的城市。 Input 前20行的第i行有3个数,表示与第i个城市相邻的3个城市.第20行以后每行有1个数m,m<=20,m>=1.m=0退出. Ou 阅读全文
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Problem Description 推箱子是一个很经典的游戏.今天我们来玩一个简单版本.在一个M*N的房间里有一个箱子和一个搬运工,搬运工的工作就是把箱子推到指定的位置,注意,搬运工只能推箱子而不能拉箱子,因此如果箱子被推到一个角上(如图2)那么箱子就不能再被移动了,如果箱子被推到一面墙上,那么 阅读全文
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Problem Description Suppose that we have a square city with straight streets. A map of a city is a square board with n rows and n columns, each repres 阅读全文
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Problem Description A DFS(digital factorial sum) number is found by summing the factorial of every digit of a positive integer. For example ,consider 阅读全文
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Problem Description The GeoSurvComp geologic survey company is responsible for detecting underground oil deposits. GeoSurvComp works with one large re 阅读全文
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Problem Description There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black til 阅读全文
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Problem Description The doggie found a bone in an ancient maze, which fascinated him a lot. However, when he picked it up, the maze began to shake, an 阅读全文
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描述As the new term comes, the Ignatius Train Station is very busy nowadays. A lot of student want to get back to school by train(because the trains in 阅读全文
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Problem Description A simple mathematical formula for e iswhere n is allowed to go to infinity. This can actually yield very accurate approximations o 阅读全文
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Description It is said that 90% of frosh expect to be above average in their class. You are to provide a reality check. Input The first line of standa 阅读全文
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Problem Description We all love recursion! Don't we?Consider a three-parameter recursive function w(a, b, c):if a <= 0 or b <= 0 or c <= 0, then w(a, 阅读全文
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Problem Description Long time ago , Kitty lived in a small village. The air was fresh and the scenery was very beautiful. The only thing that troubled 阅读全文
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Problem Description Ignatius has just come back school from the 30th ACM/ICPC. Now he has a lot of homework to do. Every teacher gives him a deadline 阅读全文
