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G. Running in Pairs

链接：https://codeforces.com/contest/1244/problem/G Demonstrative competitions will be held in the run-up to the 20NN20NN Berlatov Olympic Games. Today ...

2020-09-15

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B. Balanced Tunnel

链接：https://codeforces.com/contest/1237/problem/B Consider a tunnel on a one-way road. During a particular day, nn cars numbered from 11 to nn entered...

2020-09-15

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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...

2020-09-15

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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...

2020-09-15

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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...

2020-09-15

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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...

2020-09-15

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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...

2020-09-15

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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 ...

2020-09-15

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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...

2020-09-15

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B - Pocket Cube

链接：https://vjudge.net/contest/339839#problem/B The Pocket Cube, also known as the Mini Cube or the Ice Cube, is the 2 × 2 × 2 equivalence of a Rubik’...

2020-09-15

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