Tokio Marine & Nichido Fire Insurance Programming Contest 2023（AtCoder Beginner Contest 307) - AtCoder B - racecar 全探索 #include <bits/stdc++.h> using namespace std; #define REP(i,n) for(int i=0;i<n;i++) #define endl '\n' int main() { int n; cin >> n; vector<string> s(n); REP(i,n) cin >> s[i]; auto f…</string></n;i++)></bits/stdc++.h>