/**
 *   @FileName	b.cpp
 *   @Author	kanpurin
 *   @Created	2020.09.18 21:45:23
**/

#include "bits/stdc++.h" 
using namespace std; 
typedef long long ll;

int main() {
    int n;cin >> n;
    int cnt = 0;
    for (int i = 0; i * 5 <= n; i++) {
        for (int j = 0; j * 2 <= n && j <= i; j++) {
            for (int k = 0; k * 3 <= n; k++) {
                if (i * 5 + j * 2 + k * 3 == n) {
                    cnt++;
                }
            }
        }
    }
    cout << cnt << endl;
    return 0;
}