func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int i, n, l, k = 0, maxi;     scanf( %d , &n);     long long int count = 0;     int a[15];     l = n;     while (l) {       a[k] = l % 10;       l = l / 10;       k++;     }     while (k > 0) {       maxi = 0;       for (i = 0; i < k; i++)         if (a[i] > maxi) maxi = a[i];       n = n - maxi;       k = 0;       l = n;       while (l) {         a[k] = l % 10;         l = l / 10;         k++;       }       count++;     }     if (n == 0)       cout << count << endl;     else       cout << count + 1 << endl;     return 0;   }   