#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;
}
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