Codeforces Round #528 (Div. 2)题解 A. Right-Left Cipher 很明显这道题按题意逆序解码即可 Code: # include <bits/stdc++.h> int main() { std::string s, t; std::cin >> s; int len = s.length(); int cnt = 0; for(int i = 0; i < len; i++) { t = t + s[((len + 1) / 2 +…
Codeforces Round #506 (Div. 3) E dfs+贪心 #include<bits/stdc++.h> using namespace std; typedef long long ll; ; int n,u,v; int ans; vector<int>M[maxn]; int dfs(int cur,int pre) { ; ;i<M[cur].size();i++) { int nex = M[cur][i]; if(pre == nex)con…
Codeforces Round #665 (Div. 2) 题解 写得有点晚了,估计都官方题解看完切掉了,没人看我的了qaq. 目录 Codeforces Round #665 (Div. 2) 题解 A - Distance and Axis B - Ternary Sequence C - Mere Array D - Maximum Distributed Tree E - Divide Square F - Reverse and Swap A - Distance and Axis…