#include <bits/stdc++.h>
using namespace std;
int main(){
typedef  long long ll;
const int mod=1e6+7;
ll n;cin>>n;
ll q = (n + 3)/2;
n = (n + 2)/2;
n %= mod;
q %= mod;
n *= q;
n += mod - 1;
n %= mod;
cout << n << endl;
}