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codeforces

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全部文章 / codeforces （共130篇）

D. Three Integers

链接：https://codeforces.ml/contest/1311/problem/D You are given three integers a≤b≤ca≤b≤c. In one move, you can add +1+1&nbs***bsp;−1−1 to any of ...

2020-09-15

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B. Nick and Array

链接：https://codeforces.ml/contest/1180/problem/B Nick had received an awesome array of integers a=[a1,a2,…,an]a=[a1,a2,…,an] as a gift for his 55 birt...

2020-09-15

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C. Playlist

链接：https://codeforces.ml/contest/1140/problem/C You have a playlist consisting of nn songs. The ii-th song is characterized by two numbers titi and b...

2020-09-15

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D. Minimum Triangulation

链接：https://codeforces.ml/contest/1140/problem/D You are given a regular polygon with nn vertices labeled from 11 to nn in counter-clockwise order. Th...

2020-09-15

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E1. String Coloring (easy version)

链接：https://codeforces.ml/contest/1296/problem/E1 This is an easy version of the problem. The actual problems are different, but the easy version is a...

2020-09-15

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E2. String Coloring (hard version)

链接：https://codeforces.ml/contest/1296/problem/E2 This is a hard version of the problem. The actual problems are different, but the easy version is al...

2020-09-15

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B. Journey Planning

链接：https://codeforces.ml/contest/1321/problem/B Tanya wants to go on a journey across the cities of Berland. There are nn cities situated along the m...

2020-09-15

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C. Remove Adjacent

链接：https://codeforces.ml/contest/1321/problem/C You are given a string ss consisting of lowercase Latin letters. Let the length of ss be |s||s|. You ...

2020-09-15

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C. Kuroni and Impossible Calculation

链接：https://codeforces.ml/contest/1305/problem/C To become the king of Codeforces, Kuroni has to solve the following problem. He is given nn numbers ...

2020-09-15

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C. Primitive Primes

链接：https://codeforces.ml/contest/1316/problem/C It is Professor R's last class of his teaching career. Every time Professor R taught a class, he gave...

2020-09-15

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