func_code_string: #include <bits/stdc++.h>   using namespace std;   void solve() {     long long int n, m, a = 0, b = 0, c = 0, d, h, p, x, y, z, i = 0, j = 0,                         k = 0, l, r, rem, time = 0, ans = 0, mini = 1e18 + 1,                         maxi = 0, count = 0, sum = 0, sign = 0, xx, yy, zz;     cin >> n;     if (n >= 22 || n <= 10)       cout <<  0             <<   n ;     else if (n > 10 && n < 20 || n == 21)       cout <<  4             <<   n ;     else if (n == 20)       cout <<  15             <<   n ;   }   void fast() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);   }   int main() {     fast();     int t = 1;     while (t--) {       solve();     }     return 0;   }   