#include <iostream>
using namespace std;
#define MOD 1000007
int main(){
    long long n;cin>>n;
    if(n%2){
        cout << (((n/2+1)%MOD)*((n/2)%MOD) + n)%MOD << endl;
    }else{
        cout << (((n/2)%MOD)*((n/2)%MOD) + n)%MOD  << endl;
    }
}