#include <iostream>
#include <vector>
 
using namespace std;
 
vector<int> dp(1000000, -1);
 
int banyakcara(int N) {
    if (N == 0) {
        return 1;
    }
 
    if (dp[N] != -1) {
        return dp[N];
    }
 
    int cnt = 0;
    for (int i = 1; i <= 6; i++) {
        if (N - i >= 0) {
            cnt += banyakcara(N - i);
        }
    }
 
    dp[N] = cnt;
    return cnt;
}
 
int main() {
    int N;
    cin >> N;
 
    cout << banyakcara(N);
 
    return 0;
}
 

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