#include <bits/stdc++.h> using namespace std; int main() { int mod = 1e9+7; int n; cin >> n; vector<int> dp(n+1,0); dp[0] = 1; for (int i = 1; i <= n; i++) { for (int j = 1; j <= 6 && i-j >= 0; j++) { (dp[i] += dp[i-j]) %= mod; } } cout << dp[n] << endl; }