#include <iostream>
using namespace std;
typedef long long ll;

const ll MOD = 1000007;

int main(){
    ll N;
    cin >> N;
    
    ll A = N / 2;
    ll B = N - A;
    
    A %= MOD;
    B %= MOD;
    
    ll res = (A * B % MOD + N % MOD) % MOD;
    cout << res << endl;
    
    return 0;
}