寒假训练—— HDU - 2094 产生冠军 DFS or BFS
有一群人，打乒乓球比赛，两两捉对撕杀，每两个人之间最多打一场比赛。 球赛的规则如下： 如果A打败了B，B又打败了C，而A与C之间没有进行过比赛，那么就认定，A一定能打败C。 如果A打败了B，B又打败了C，而且，C又打败了A，那么A、B、C三者都不可能成为冠军。 根据这个规则，无需循...
假期训练—— HDU - 4930 Fighting the Landlords 模拟
Fighting the Landlords is a card game which has been a heat for years in China. The game goes with the 54 poker cards for 3 players, where the “Landl...
CodeForces 500C New Year Book Reading 贪心
New Year is coming, and Jaehyun decided to read many books during 2015, unlike this year. He has n books numbered by integers from 1 to n. The weight...
Codeforces 757B Bash's Big Day math, number theory
B. Bash's Big Day time limit per test 2 seconds memory limit per test 512 megabytes input standard input output standard...
Codeforces 757C Felicity is Coming! hashing, sortings, strings
C. Felicity is Coming! time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard...
Codeforces 754D Fedor and coupons binary search, data structures, greedy, sortings
D. Fedor and coupons time limit per test 4 seconds memory limit per test 256 megabytes input standard input output standard o...
Codeforces 749D Leaving Auction binary search+data structures
D. Leaving Auction time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard out...
Codeforces 748B Santa Claus and Keyboard Check
B. Santa Claus and Keyboard Check time limit per test 2 seconds memory limit per test 256 megabytes input standard input outpu...
CodeForces - 451B Sort the Array 简单模拟
Being a programmer, you like arrays a lot. For your birthday, your friends have given you an array a consisting of n distinct integers. Unfortunatel...
CodeForces 446B DZY Loves Modification 经典+贪心+更换遍历对象
As we know, DZY loves playing games. One day DZY decided to play with a n × m matrix. To be more precise, he decided to modify the matrix with exactl...