ACM,再见！

http://acm.hdu.edu.cn/showproblem.php?pid=4771Problem Description　　Harry Potter has some precious. For example, his invisible robe, his wand and his owl. When Hogwarts school is in holiday,

http://acm.hdu.edu.cn/showproblem.php?pid=5023

http://acm.hdu.edu.cn/showproblem.php?pid=4770Problem DescriptionHarry: "But Hagrid. How am I going to pay for all of this? I haven't any money." Hagrid: "Well there's your money, Harr

http://codeforces.com/problemset/problem/552/CC. Vanya and Scalestime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputs

http://acm.hdu.edu.cn/showproblem.php?pid=5094Problem DescriptionThis story happened on the background of Star Trek.Spock, the deputy captain of Starship Enterprise, fell into Klingo

http://poj.org/problem?id=3311DescriptionThe Pizazz Pizzeria prides itself in delivering pizzas to its customers as fast as possible. Unfortunately, due to cutbacks, they can afford to hire on

http://acm.hdu.edu.cn/showproblem.php?pid=5014

http://acm.hdu.edu.cn/showproblem.php?pid=4770

http://acm.hdu.edu.cn/showproblem.php?pid=4810

http://vjudge.net/vjudge/contest/view.action?cid=53516#problem/D

http://www.bnuoj.com/v3/contest_show.php?cid=6869#problem/DAlice and Bob has found a island of treasure in byteland! They find N kinds of treasures on the island, and each kind of treasure has a