#include <bits/stdc++.h>
#define MOD 999017

int main(){
    FILE*fi,*fo;
    fi = fopen("sortari2.in","r");
    fo = fopen("sortari2.out","w");

    int n;
    fscanf(fi,"%d", &n);
    long long f1, f2, f3;
    if(n == 1 || n == 2)
        f3 = 1;
    else{
        f1 = 1;
        f2 = 1;
        for(int i = 3; i <= 2 * n - 1; i++){
            f3 = (f1 + f2) % MOD;
            f1 = f2;
            f2 = f3;
        }
    }
    long long fact = 1;
    while(n > 0){
        fact = (fact * n) % MOD;
        n--;
    }
    fprintf(fo,"%lld", fact - f3);

    fclose(fi);
    fclose(fo);
    return 0;
}