龍木

未归档

c#(1) codeforces(130) dp(2) map(2) RMQ(1) 一些神奇的东西(1) 三分(1) 前缀和(1) 区间dp(1) 博弈(2) 大数(1) 平面几何(1) 并查集(1) 快数幂(1) 总结(1) 打表(1) 找规律(4) 数学(8) 暴力(1) 最小公约数(1) 最小生成树(1) 杭电(4) 浅谈(8) 深度优先搜索(1) 牛客(10) 组合数(1) 网络流最大流(2) 题解(3)

/ 注册

全部文章 / 未归档（共421篇）

问题 F: N个物品2

链接：http://acm.ocrosoft.com/problem.php?cid=2001&pid=5 题目描述现有N个物品，第i个物品有两个属性A_i和B_i。在其中选取若干个物品，使得sum{A_i + B_i}最大，同时sum{A_i}，sum{B_i}均非负（sum...

2020-05-28

0 498

问题 E: 猩猩散步

链接：http://acm.ocrosoft.com/problem.php?cid=2001&pid=4 题目描述　　猩猩，骆驼，还有泡泡经常喜欢在饭后到操场上散步，由于猩猩的走路姿势最突出最显眼，理所应当的成为他们中的主角，所以我的题目就说猩猩散步了。（骆驼和泡泡别有意见哈，和猩猩...

2020-05-28

0 423

E. By Elevator or Stairs?

链接：https://codeforces.com/contest/1249/problem/E You are planning to buy an apartment in a nn-floor building. The floors are numbered from 11 to nn f...

2020-05-28

0 508

B2. Books Exchange (hard version)

链接：https://codeforces.com/contest/1249/problem/B2 The only difference between easy and hard versions is constraints. There are nn kids, each of them...

2020-05-28

0 505

C2. Good Numbers (hard version)

链接：https://codeforces.com/contest/1249/problem/C2 The only difference between easy and hard versions is the maximum value of nn. You are given a pos...

2020-05-28

0 633

B2. TV Subscriptions (Hard Version)

链接：https://codeforces.com/contest/1247/problem/B2 The only difference between easy and hard versions is constraints. The BerTV channel every day bro...

2020-05-28

0 343

C. p-binary

链接：https://codeforces.com/contest/1247/problem/C Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is v...

2020-05-28

0 555

7030问题 U: 家庭问题

题目描述有n个人，编号为1,2,……n，另外还知道存在K个关系。一个关系的表达为二元组（α，β）形式，表示α，β为同一家庭的成员。当n，k和k个关系给出之后，求出其***有多少个家庭、最大的家庭中有多少人？例如：n＝6，k＝3，三个关系为（1,2），(1,3)，(4,5) 此时，6个人组成三...

2020-05-28

0 500

C - The Dominator of Strings

Here you have a set of strings. A dominator is a string of the set dominating all strings else. The string SS is dominated by TT if SS is a substring ...

2020-05-28

0 362

K - Kingdom of Obsession

There is a kindom of obsession, so people in this kingdom do things very strictly. They name themselves in integer, and there are nn people with thei...

2020-05-28

0 375