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A. Key racestime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputTwo boys decided to compete in text typing on t

题目链接：http://codeforces.com/contest/977A:题意是对这个数进行k次操作，如果这个数能被10整除，就除以10，不能的话就减1。#include#include#include#includeusing namespace std;#define LL long long intint main(){ int n, k; while (ci

A. Fox And Snaketime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputFox Ciel starts to learn programming. The

E. Breaking Goodtime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputBreaking Good is a new video game which a

B. Amr and Pinstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputAmr loves Geometry. One day he came up with

A. Search for Pretty Integerstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputYou are given two lists of non

B. The Eternal Immortalitytime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputEven if the world is full of coun

A. The Artful Expedienttime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputRock... Paper!After Karen have f

B. Balanced Substringtime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputYou are given a string s consisting on

RXD and mathProblem DescriptionRXD is a good mathematician.One day he wants to calculate:∑i=1nkμ2(i)×⌊nki−−−√⌋output the answer module 109+7.1≤n,k≤1018μ(n)=1(n=1)μ(n)=(−1

B. Misha and Changing Handlestime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputMisha hacked the Codeforces si

A. Mr. Kitayuta's Gifttime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputMr. Kitayuta has kindly given you a s

C. Star skytime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputThe Cartesian coordinate system is set in the s

B. The number on the boardtime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputSome natural number was written

题意是给你很多个区间，让你找覆盖恰好为k层的区间。 用扫描线直接做就行了。#include<iostream>#include<algorithm>#include<cstring>#include<vector>#include<cstdio>using namespace std;#define LL long lo...