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Codeforces Round #416 (Div. 2）
http://codeforces.com/contest/811 1 水题，两个人有蛋糕，每天互相给，并且每天多给一个...
codeforces Div.2 #840D Leha and another game about graph 顶点权值为度数对应奇偶
原题链接: codeforces 840D 大意： 给一个无向连通图，不包含子环，允许回路存在。每个点的...
Codeforces Round #429 (Div 2) A
A. Generous Kefa One day Kefa found n baloons. For convenience, we denote color of i...
Codeforces Round #429 (Div2) B
B. Godsend Leha somehow found an array consisting of n integers. Looking at it, he c...
Codeforces Round #429 (Div2) C
C. Leha and Function Leha like all kinds of strange things. Recently he liked the fu...
Codeforces Round 430 (Div 2) C
C. Ilya And The Tree Ilya is very fond of graphs, especially trees. During his last ...
Codeforces Round #430 (Div. 2) D. Vitya and Strange Lesson(01Trie)
题意：给你一个数组，m次操作，每次操作给你个x，把所有数亦或x，每次操作后输出数组的mex...
Codeforces Round #430 (Div. 2)A，B
http://codeforces.com/contest/842 给定一个区间l到r a到b。、 问你是否存在一个整数 x属...
Codeforces Round #430 (Div. 2)-搜索&STL-Ilya And The Tree
http://codeforces.com/contest/842/problem/C 给定一个树，树上每个点有一定价值。 这个点...
Codeforces Round #430 (Div. 2) 签到题
传送门：点击打开链接 A. Kirill And The Game time limit per test 2 seconds memory lim...
Codeforces Round #419 (Div. 2)A&B&技巧
http://codeforces.com/contest/816 A 模拟，从头到尾就行 给你一个时间。 输出最小的时间...
Codeforces Round #419 (Div. 2)-贪心&思维-C. Karen and Game
http://codeforces.com/contest/816/problem/C 这个题，看下面的解释就看懂了。 给定一个矩...
Codeforces Round #419 (Div. 2)-树形dp&依赖背包&-E. Karen and Supermarket
http://codeforces.com/contest/816/problem/E 给定一个物品的 原价格 和现价格，问你如何...
Codeforeces Round #226 (Div. 2) E---Bear in the Field(矩阵快速幂)
Our bear's forest has a checkered field. The checkered field is an n × n ta...
Codeforces Round #430 (Div. 2)(A+B+C)
A. Kirill And The Game time limit per test:2 seconds memory limit per test:256 megab...
Codeforces Round #433 (Div. 2) C. Planning（贪心）
C. Planning time limit per test 1 second memory limit per test 512 megabytes input s...
Codeforces Round #433 (Div. 2) D. Jury Meeting(思维 贪心 前后缀)
题意：有n+1个城市，从1~n号城市每个城市有一个评委要到0号城市和其他n-1个评委一起工作k天...
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