#include <iostream>

using namespace std;

const int N = 15;

int f[N];

int main(){
    int n;
    cin >> n;

    f[1] = 1;
    f[2] = 1 + 1;
    f[3] = 1 + 1;
    f[4] = 1 + 1 + 1;
    f[5] = 1 + 1 + 1;
    f[6] = 1 + 1 + 1;
    f[7] = 1 + 1;
    f[8] = 1 + 1;
    f[9] = 1;
    f[10] = 1;

    cout << f[n] << endl;


    return 0;
}

#include <iostream>

using namespace std;

int main(){
    int n;
    cin >> n;

    int cnt = 0;
    for (int i = 0; i <= 5; i ++)
        for (int j = i; j <= 5; j ++)
            if (i + j == n) cnt ++;

    cout << cnt << endl;

    return 0;
}