#include <iostream>
using namespace std;

int main() {

	int n;
	cin>>n;
	
	int dp[n+1]={0};
	dp[0]=1;

	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=6;j++)
		{
			if(i-j >= 0)
			{
				dp[i] = (dp[i] + dp[i-j])%1000000007;
			}
		}
	}

	cout<<dp[n]%1000000007<<endl;

	return 0;
}