#include <bits/stdc++.h>
using namespace std;
using ll = long long;
constexpr ll mod = 1000007;
int main()
{
ll N;
cin >>N;
const ll A = (N /2)%mod;
const ll B = ((N+1)/2)%mod;
cout << ((A*B)+N)%mod << endl;
return 0;
}