C. Mahmoud and a Message time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Mahmoud wrote a message s of length n. He wants to send it as a birthday present to his friend Moaz who likes strin…

C. Mahmoud and a Message time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Mahmoud wrote a message s of length n. He wants to send it as a birthday present to his friend Moaz who likes strin…

time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Mahmoud wrote a message s of length n. He wants to send it as a birthday present to his friend Moaz who likes strings. He wrote it on a magical…

C. Mahmoud and a Message 题目连接: http://codeforces.com/contest/766/problem/C Description Mahmoud wrote a message s of length n. He wants to send it as a birthday present to his friend Moaz who likes strings. He wrote it on a magical paper but he was su…

地址:http://codeforces.com/contest/766/problem/C 题目: C. Mahmoud and a Message time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Mahmoud wrote a message s of length n. He wants to send it as a…

Codeforces 959D. Mahmoud and Ehab and another array construction task 题意 构造一个任意两个数都互质的序列,使其字典序大等于a序列且最小. 思路 其实这题乱搞就行了.用到了之前HDdalao教我的素因子分解方法,可以快速地对枚举的数进行检测. 我们维护一个当前已填的数的素因子集合以及一个大于1的自然数集合(考虑最坏情况,我们总可以都用素数来构造这个序列.由素数的密度可知,n/ln(n)要大于1e5,所以该自然数集合上限达到2e…

题目链接:http://codeforces.com/problemset/problem/766/C 题意 有一个长度为n的字符串,第二行有26个数字,位置1~26对应为a~z的字母,数值表示该字母不能出现在长度超过该值的子串中. 求有多少种划分该字符串的方法 求该字符串划分成子串后最大的子串的长度 求该字符串划分成满足要求的子串需要至少划分多少次 AC代码 #include <stdio.h> #include <string.h> #include <iostream&…

题目链接:http://codeforces.com/contest/766/problem/C 题意:给你一个长度为n的字符串,这个字符串只包含小写字母,然后让你把这个字符串进行分割,形成若干个小的字符串, 每个小写字母都有一个数字ma[i],表示这个字母能够存在于长度不超过ma[i]的字符串内, 在这个条件下分割问最多有几 种分割方法,最长分割串为多少,最小分割为几部分. 一道简单的dp,很明显要设dp[i]表示到i位一共有几种分割方法然后递推,注意更新过程中要满足所有子串.然后再设f[i]…

D. Mahmoud and a Dictionary time limit per test:4 seconds memory limit per test:256 megabytes input:standard input output: standard output Mahmoud wants to write a new dictionary that contains n words and relations between them. There are two types o…

D. Mahmoud and a Dictionary time limit per test 4 seconds memory limit per test 256 megabytes input standard input output standard output Mahmoud wants to write a new dictionary that contains n words and relations between them. There are two types of…