func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, minx = 999999, ans, df1, df2;     char s[51];     scanf( %d , &n);     getchar();     scanf( %s , s);     for (int i = 0; i < n - 3; i++) {       int t = 0;       ans = 0;       while (t <= 3) {         int x = i + t;         if (t == 0) {           df1 = s[x] -  A ;           df2 =  Z  - s[x] + 1;           ans += min(df1, df2);         }         if (t == 1) {           df1 = abs(s[x] -  C );           df2 =  Z  - s[x] + 3;           ans += min(df1, df2);         }         if (t == 2) {           df1 = abs(s[x] -  T );           df2 = s[x] -  A  + 7;           ans += min(df1, df2);         }         if (t == 3) {           df1 = abs(s[x] -  G );           df2 =  Z  - s[x] + 7;           ans += min(df1, df2);         }         t++;       }       minx = min(minx, ans);     }     printf( %d n , minx);   }   