func_code_string: #include <bits/stdc++.h>   using namespace std;   int get(int x) {     int cnt = 0;     while (x >= 10) {       int sum = 0;       while (x) {         sum += x % 10;         x /= 10;       }       cnt++;       x = sum;     }     return cnt;   }   int main() {     string s;     cin >> s;     if (s.size() == 1)       cout << 0 << endl;     else {       int n = 0;       for (int i = 0; i < s.size(); i++) n += s[i] -  0 ;       cout << get(n) + 1 << endl;     }     return 0;   }   