func_code_string: #include <bits/stdc++.h>   using namespace std;   bool isopen(char ch) {     if (ch ==  <  || ch ==  {  || ch ==  (  || ch ==  [ ) return true;     return false;   }   int main() {     int k, sum = 0, ans = 0;     string s;     cin >> k >> s;     int c[10] = {0};     for (long long int i = 0; i < s.size(); i++) {       sum = sum + s[i] -  0 ;       int d = s[i] -  0 ;       c[d]++;     }     for (int i = 0; i < 9; i++)       for (int j = 0; j < c[i]; j++) {         if (k > sum) {           sum = sum + 9 - i;           ans++;         }       }     cout << ans;   }   