Dark is going to attend Motarack's birthday. Dark decided that the gift he is going to give to Motarack is an array aa of nn non-negative integers. Dark created that array 10001000 years ago, so some elements in that array disappeared. Dark knows tha…

最近网课也开始了,牛客上一堆比赛题目也没补,所以就D题后面的也懒得补了 A.Three String 水题 #include <cstdio> #include <cstring> using namespace std; ], b[], c[]; int main() { int t; scanf("%d", &t); while (t--) { memset(a, , sizeof(a)); memset(b, , sizeof(b)); memse…

A. Three Strings 题意:给三个长度相同的非空字符串abc,依次将c中的每个字符和a或者b中对应位置的字符进行交换,交换必须进行,问能否使得ab相同. 思路:对于每一个位置,如果三个字符都不相同,那一定不同,如果有两个相同且不是ab相同,则合法,否则不合法,如果三个字符都相同,那么合法. #include<bits/stdc++.h> #define LL long long #define dl double void rd(int &x){ x=;;char ch=g…

题:https://codeforces.com/contest/1301/problem/E 题意:给个n*m的图形,q个询问,每次询问问询问区间最大的合法logo的面积是多少 分析:由于logo是由4个同色的小正方形组成的,所以我们先考虑一个数组val[i][j]表示[i][j]位置为‘R' , [i+1][j]位置为’Y‘,[i][j+1]位置为’G‘,[i+1][j+1]位置为’B'所能形成的最大图案边长是多少: 因为这样就只要预处理‘R’正方形沿着左上能形成的最大正方形,“Y”沿着左下…

先把一种最长路线记录下来,根据k的大小存到ans中相应的答案再输出 #define HAVE_STRUCT_TIMESPEC #include<bits/stdc++.h> using namespace std; vector<char>vv; vector<pair<int,char>>ans; int main(){ ios::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); int n,m,…

#define HAVE_STRUCT_TIMESPEC #include<bits/stdc++.h> using namespace std; int main(){ ios::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); int t; cin>>t; while(t--){ long long n,m; cin>>n>>m; ; ans=(n*(n+))>>;//总方案数(无论…

Ayoub thinks that he is a very smart person, so he created a function f(s)f(s) , where ss is a binary string (a string which contains only symbols "0" and "1"). The function f(s)f(s) is equal to the number of substrings in the string s…

You are given three strings aa , bb and cc of the same length nn . The strings consist of lowercase English letters only. The ii -th letter of aa is aiai , the ii -th letter of bb is bibi , the ii -th letter of cc is cici . For every ii (1≤i≤n1≤i≤n )…

Codeforces Round #366 (Div. 2) A I hate that I love that I hate it水题 #I hate that I love that I hate it n = int(raw_input()) s = "" a = ["I hate that ","I love that ", "I hate it","I love it"] for i in ran…

Codeforces Round #354 (Div. 2) Problems     # Name     A Nicholas and Permutation standard input/output 1 s, 256 MB    x3384 B Pyramid of Glasses standard input/output 1 s, 256 MB    x1462 C Vasya and String standard input/output 1 s, 256 MB    x1393…