#include<stdio.h>

#define MOD(m) ((m)%1000007)

int main(void){

	long long int N;
	scanf("%lld",&N);
	long long int m=N/2;
	printf("%lld\n",MOD(MOD(m)*MOD(N-m)+MOD(m)+MOD(N-m)));
	return 0;
}