#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
using namespace std;
using ll = long long ;
using P = pair<int,int> ;
using pll = pair<long long,long long>;
constexpr int INF = 1e9;
constexpr long long LINF = 1e17;
constexpr int MOD = 1000000007;
constexpr double PI = 3.14159265358979323846;

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