#include <iostream>
#include <fstream>
 
using namespace std;
 
#define modulo 999017
 
int factorial( int n )
{
    int s = 1;
 
    for ( int i = 2; i <= n; ++i )
            s = ( s * i ) % modulo;
 
    return s;
}
 
int Fibonacci( int n )
{
    int a = 0;
    int b = 1;
    int c = 1;
 
    for ( int i = 3; i <= n; ++i )
    {
        c = ( a + b ) % modulo;
        a = b;
        b = c;
    }
 
    return c;
}
 
int N;
 
int main()
{
    ifstream f("sortari2.in");
    ofstream g("sortari2.out");
 
    f >> N;
 
    g << ( factorial( N ) - Fibonacci( 2 * N ) + modulo ) % modulo << "\n";
 
    f.close();
    g.close();
 
    return 0;
}