func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, x;     while (cin >> n) {       x = n - 10;       if (x <= 0 || x > 11)         cout << 0 << endl;       else if (x == 10)         cout << 15 << endl;       else         cout << 4 << endl;     }     return 0;   }   