#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define REP(i, n)           for(int(i)=0;(i)<(n);++(i))
const int mod = 1000007; 
int main(){
    ll N;
    cin >> N;
    N %= mod;
    cout << (N*(N+4)/4)%mod << endl;
    return 0;
}