func_code_string: #include <bits/stdc++.h>   int main() {     int a, i, b, k, temp;     while (~scanf( %d , &a) && a >= 0) {       temp = 0;       while (a) {         b = a;         k = 0;         while (b > 0) {           if (k < b % 10) k = b % 10;           b = b / 10;         }         a -= k;         temp++;       }       printf( %d n , temp);     }     return 0;   }   