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全部文章（共613篇）

A. Beautiful String

链接：https://codeforces.com/contest/1265/problem/A A string is called beautiful if no two consecutive characters are equal. For example, "ababcb&q...

2020-09-15

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B. A and B

链接：https://codeforces.com/problemset/problem/1278/B You are given two integers aa and bb. You can perform a sequence of operations: during the first ...

2020-09-15

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C. Friends and Gifts

链接：https://codeforces.com/contest/1283/problem/C There are nn friends who want to give gifts for the New Year to each other. Each friend should give ...

2020-09-15

0 965

D. Christmas Trees

链接：https://codeforces.com/contest/1283/problem/D There are nn Christmas trees on an infinite number line. The ii-th tree grows at the position xixi. ...

2020-09-15

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E. New Year Parties

链接：https://codeforces.com/contest/1283/problem/E Oh, New Year. The time to gather all your friends and reflect on the heartwarming events of the past...

2020-09-15

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C. Increasing by Modulo

链接：https://codeforces.com/contest/1169/problem/C Toad Zitz has an array of integers, each integer is between 00 and m−1m−1 inclusive. The integers ar...

2020-09-15

0 460

B. Minimum Ternary String

链接：https://codeforces.com/problemset/problem/1009/B You are given a ternary string (it is a string which consists only of characters '0', '1' and '2'...

2020-09-15

0 471

The GCD of Fibonacci Numbers

链接：https://ac.nowcoder.com/acm/contest/3674/A The Fibonacci sequence is the sequence of numbers such that every element is equal to the sum of the tw...

2020-09-15

0 579

B. Catch Overflow!

链接：https://codeforces.com/contest/1175/problem/B You are given a function ff written in some basic language. The function accepts an integer value, w...

2020-09-15

0 493

A. Boredom

链接：https://codeforces.com/contest/455/problem/A Alex doesn't like boredom. That's why whenever he gets bored, he comes up with games. One long winter...

2020-09-15

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