func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 3e5 + 5;   vector<long long> g[N];   int main() {     ios::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     int t = 1;     while (t--) {       long long n;       cin >> n;       string s;       cin >> s;       long long i, j;       long long ans = 1e16;       for (int i = 0; i < n - 3; i++) {         long long sm = 0, c = 0;         for (int j = i; j < i + 4; j++) {           if (c % 4 == 0) {             sm += min(abs(s[j] -  A ), abs(s[j] -  Z ) + 1);           }           if (c % 4 == 1) {             sm += min(abs(s[j] -  C ), abs(s[j] -  Z ) + 3);           }           if (c % 4 == 2) {             sm += min(abs(s[j] -  T ), abs(s[j] -  A ) + 7);           }           if (c % 4 == 3) {             sm += min(abs(s[j] -  G ), abs(s[j] -  Z ) + 7);           }           c++;         }         ans = min(ans, sm);       }       cout << ans <<   n ;     }     return 0;   }   