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C. Primes and Multiplication

C. Primes and Multiplication Let's introduce some definitions that will be needed later. Let prime(x)prime(x) be the set of prime divisors of xx. Fo...

2020-05-28

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组合数

链接：https://ac.nowcoder.com/acm/contest/1099/B 组合数时间限制：C/C++ 1秒，其他语言2秒空间限制：C/C++ 32768K，其他语言65536K Special Judge, 64bit IO Format: %lld 题目描述给出 n...

2020-05-28

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B2. Social Network (hard version)

B2. Social Network (hard version) 链接：https://codeforces.com/contest/1234/problem/B2 The only difference between easy and hard versions are constra...

2020-05-28

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2016icpc上海Problem L.

链接：https://codeforces.com/gym/101194/attachments 题目大意：踢足球，一个小组有4个队，每个小组比6场，赢一场得3分平一场得1分，给出4个分数，问有没有唯一解，如果有输出Yes如果有多组解输出No如果没有解输出Wrong Scoreboard 题解：...

2020-05-28

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D. Swords

链接：https://codeforces.com/contest/1216/problem/D There were nn types of swords in the theater basement which had been used during the plays. Moreover...

2020-05-28

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C. The Football Season

链接：https://codeforces.com/contest/1244/problem/C The football season has just ended in Berland. According to the rules of Berland football, each matc...

2020-05-28

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E. Minimizing Difference

链接：https://codeforces.com/contest/1244/problem/E You are given a sequence a1,a2,…,ana1,a2,…,an consisting of nn integers. You may perform the follow...

2020-05-28

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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 ...

2020-05-28

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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...

2020-05-28

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D - Keiichi Tsuchiya the Drift King

链接：https://vjudge.net/contest/335991#problem/D Drifting is a driving style in which the driver uses the throttle, brakes, clutch, gear shifting and s...

2020-05-28

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