垃圾比赛卡我读入卡我输出毁我青春.…

题目链接 题解视频 题解文档 解法概要: 问题可以转化为 考虑一个长为 $2n$ 的数组 $A$,$1$ 到 $n$ 这 $n$ 个整数每个恰在 $A$ 中出现 $2$ 次.判断是否存在一个长为 $n$ 的子段使得 $1$ 到 $n$ 在其中各出现一次. 这个经典问题可用双指针在 $O(n)$ 的时间内解决. 这道题我 WA 到死,不是因为思路有漏洞,而是因为我不了解 std::cout . 什么是 IO manipulators 默认情况下,cout 输出浮点数的格式是 std::defaul…

题目链接:https://www.nowcoder.com/acm/contest/141/A 时间限制:C/C++ 1秒,其他语言2秒 空间限制:C/C++ 262144K,其他语言524288K Special Judge, 64bit IO Format: %lld 题目描述 Eddy was a contestant participating in ACM ICPC contests. ACM is short for Algorithm, Coding, Math. Since in…

链接:https://www.nowcoder.com/acm/contest/141/A来源:牛客网 时间限制:C/C++ 1秒,其他语言2秒 空间限制:C/C++ 262144K,其他语言524288K Special Judge, 64bit IO Format: %lld 题目描述 Eddy was a contestant participating in ACM ICPC contests. ACM is short for Algorithm, Coding, Math. Sinc…

PACM Team 链接:https://www.nowcoder.com/acm/contest/141/A来源:牛客网 时间限制:C/C++ 1秒,其他语言2秒 空间限制:C/C++ 262144K,其他语言524288K Special Judge, 64bit IO Format: %lld 题目描述 Eddy was a contestant participating in ACM ICPC contests. ACM is short for Algorithm, Coding,…

链接:https://www.nowcoder.com/acm/contest/141/A来源:牛客网 Eddy was a contestant participating in ACM ICPC contests. ACM is short for Algorithm, Coding, Math. Since in the ACM contest, the most important knowledge is about algorithm, followed by coding(impl…

链接:https://www.nowcoder.com/acm/contest/141/A 来源:牛客网 题目描述 Eddy was a contestant participating in ACM ICPC contests. ACM is short for Algorithm, Coding, Math. Since in the ACM contest, the most important knowledge is about algorithm, followed by codin…

2017中国大学生程序设计竞赛-哈尔滨站 (rank 39)solved 4 补 1 2018 CCPC 吉林 solved 5 2017CCPC秦皇岛 solved 4 待补题 2017ACM/ICPC广西邀请赛 solved 4 待补题 2016 ACM-ICPC Asia Dalian Regional Contest solved 4 待补题 2017 Xi an ICPC solved 4 待补题 2018 湖南省赛 2018-2019 ACM-ICPC, Asia East Cont…

WF里面最简答一题,就是一个dfs就可以了,已经访问过的点可以不再访问 #include <algorithm> #include <cmath> #include <cstdio> #include <cstring> #include <iostream> #include <map> #include <queue> #include <set> #include <vector> using…

先枚举所有的列长度 对于每种列长度,然后里面用dp算 #include <algorithm> #include <cmath> #include <cstdio> #include <cstring> #include <iostream> #include <map> #include <queue> #include <set> #include <vector> using namespac…