func_code_string: #include <bits/stdc++.h>   long long int lcm, k, ans, a, b;   using namespace std;   int main() {     int n;     cin >> n;     map<int, int> mp;     mp[n] = 1;     n++;     int c = 1;     while (1) {       if (mp[n] == 1 && n % 10 != 0)         break;       else {         if (n % 10 == 0) {           while (n % 10 == 0) n /= 10;         } else {           mp[n] = 1;           n++;           c++;         }       }     }     cout << c <<   n ;     return 0;   }   