DZY Loves Topological Sorting Time Limit: 1 Sec  Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/sho…

B. Passwords 题目连接： http://codeforces.com/contest/721/problem/B Description Vanya is managed to enter his favou…

Check the difficulty of problems Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 3191  …

Emag eht htiw Em Pleh Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 1950   Accepted: …

通过几道例题简单阐述一下DFS的相关题型     ZOJ2412-Farm Irrigation 　　直观的DFS题型，稍加变化，记录好四个方向上的通路就能够做出来 　　题目和接水管类似，问最少要灌溉…

2763: [JLOI2011]飞行路线 Time Limit: 1 Sec   Memory Limit: 256 MB 题目连接 http://www.lydsy.com/JudgeOnline/probl…

India and China Origins 题目连接： http://acm.hdu.edu.cn/showproblem.php?pid=5652 Description A long time ago there…

E. Alyona and Triangles 题目连接： http://codeforces.com/contest/682/problem/E Description You are given n points w…

A. Bear and Five Cards 题目连接： http://www.codeforces.com/contest/680/problem/A Description A little bear Limak p…

1090: [SCOI2003]字符串折叠 Time Limit: 1 Sec   Memory Limit: 256 MB 题目连接 http://www.lydsy.com/JudgeOnline/prob…

Good Luck in CET-4 Everybody! Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 3276…

D. Winter is here 题目连接： http://codeforces.com/contest/839/problem/D Description Winter is here at the North an…