func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     string s;     cin >> s;     int a[7];     for (int i = 0; i < 6; i++) {       a[i] = s[i] -  0 ;     }     int ans = 3;     for (int i = 0; i <= 9; i++) {       for (int j = 0; j <= 9; j++) {         for (int k = 0; k <= 9; k++) {           for (int x = 0; x <= 9; x++) {             for (int y = 0; y <= 9; y++) {               for (int z = 0; z <= 9; z++) {                 if (i + j + k == x + y + z) {                   int res = 0;                   if (i != a[0]) res++;                   if (j != a[1]) res++;                   if (k != a[2]) res++;                   if (x != a[3]) res++;                   if (y != a[4]) res++;                   if (z != a[5]) res++;                   ans = min(ans, res);                 }               }             }           }         }       }     }     for (int i = 0; i <= 9; i++) {       for (int j = 0; j <= 9; j++) {         for (int k = 0; k <= 9; k++) {           if (i + j + k == a[3] + a[4] + a[5]) {             int res = 0;             if (i != a[0]) res++;             if (j != a[1]) res++;             if (k != a[2]) res++;             ans = min(ans, res);           }         }       }     }     cout << ans <<   n ;   }   