#include <bits/stdc++.h>   using namespace std;   const int MAXN = 9e4;   const int INF = 1 << 30;   const long long mod = 1e9 + 7;   const double eps = 1e-8;   int main() {     long long a[100] = {0,   4,   10,  20,  35,  56,  83, 116,                         155, 198, 244, 292, 341, 390, 439};     long long n;     while (cin >> n)       if (n <= 14)         cout << a[n] << endl;       else         cout << a[14] + (long long)49 * (n - 14) << endl;   }   