因为不会打公式,随意就先将就一下? #include<cstdio> #include<algorithm> #include<iostream> #include<cstring> #include<vector> using namespace std; typedef long long LL; ; ; int add (int x,int y) {x=x+y;return x>=MOD?x-MOD:x;} int mul (int…
D. Little Pony and Harmony Chest Princess Twilight went to Celestia and Luna's old castle to research the chest from the Elements of Harmony. A sequence of positive integers bi is harmony if and only if for every two elements of the sequence their…
任意门:http://codeforces.com/contest/1118/problem/D1 D1. Coffee and Coursework (Easy version) time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output The only difference between easy and hard versions…
链接: https://codeforces.com/contest/1185/problem/C2 题意: The only difference between easy and hard versions is constraints. If you write a solution in Python, then prefer to send it in PyPy to speed up execution time. A session has begun at Beland Stat…
链接: https://codeforces.com/contest/1185/problem/B 题意: Methodius received an email from his friend Polycarp. However, Polycarp's keyboard is broken, so pressing a key on it once may cause the corresponding symbol to appear more than once (if you press…
D1. RGB Substring (easy version) time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output The only difference between easy and hard versions is the size of the input. You are given a string s consistin…
