B. Rectangle and Square 题目连接： http://codeforces.com/contest/135/problem/B Description Little Petya very much l…

C. Tanya and Toys 题目连接： http://www.codeforces.com/contest/659/problem/C Description In Berland recently a new …

http://poj.org/problem?id=2245 Lotto 在玩德国游戏Lotto时，要从集合{1，2，……，49}中取出六个数。 一个非常流行的玩法（尽管这种玩法并不能增加你赢的机会）是从这49个数字中取…

Bob’s Race Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=4123 Descrip…

Alice and Bob Time Limit: 20 Sec  Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pi…

The Number Off of FFF Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 …

Sum of divisors Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Jav…

FatMouse’ Trade Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 …

[BeiJing wc2012]连连看 题目连接： http://www.lydsy.com/JudgeOnline/problem.php?id=2661 Description 凡是考智商的题里面总会有这么一种消除游…

1934: [Shoi2007]Vote 善意的投票 Time Limit: 1 Sec   Memory Limit: 256 MB 题目连接 http://www.lydsy.com/JudgeOnline…

ABCDE 题目连接： http://acm.uestc.edu.cn/#/problem/show/1307 Description Binary-coded decimal (BCD) is a kind of bi…

Robot 题目连接： http://acm.hdu.edu.cn/showproblem.php?pid=5673 Description There is a robot on the origin point of…