//  Dice Combinations

#include<bits/stdc++.h>

using namespace std;
using ll = long long;

const ll N = 1e6;
const ll MOD = 1e9 + 7;

ll ways[N + 1];

int main() {
    ll n; cin >> n;
    ways[0] = 1;
    for (ll i = 1; i <= n; i++) {
        for (ll j = 1; j <= 6 && j <= i; j++) {
            ways[i] = (ways[i] + (ways[i - j])) % MOD;
        }
    }
    cout << ways[n];
}