inversum

#include <iostream>
#define ULL unsigned long long int
#define MOD 1000003
using namespace std;

int main()
{
    int n;
    ULL s=1;
    cin>>n;
    for(int i=2;i<=n;++i)
        if(i!=4)
        	s*=i,s%=MOD;
    s=s*n*(n-1)%MOD;
    cout<<s;
    return 0;
}