#include <stdio.h>
#define mod 1000007
int main(){
  long long int i,j;
  long long int n;
  long long int ans;
  long long int b,u;
  scanf("%lld",&n);
  if(n%2==1){
    b=n/2+1;
    u=n/2;
    ans=(u*(b+1))%mod;
    ans=ans+b;
  }
  else {
    b=n/2;
    u=n/2;
    ans=(u*(b+1))%mod;
    ans=ans+b;
  }
  printf("%lld\n",ans%mod);
  return 0;
}