#include<stdio.h>
main()
{
long n,a,b,c,d,k,x,valid,div=1048576;
freopen("12perm.in","r",stdin);
freopen("12perm.out","w",stdout);
fscanf(stdin,"%ld",&n);
if(n==1) { x=1;
	   fprintf(stdout,"%ld",x); }
if(n==2) { x=2;
	   fprintf(stdout,"%ld",x); }
if(n==3) { x=6;
	   fprintf(stdout,"%ld",x); }
if(n==4) { x=12;
	   fprintf(stdout,"%ld",x); }
if(n>4)
{ a=2;b=6;c=12;
  k=5;
  do{
     d=(2*(k-2))+a+c; d%=div;
     a=b;b=c;c=d;
     k++;
     }while(k<=n);
  fprintf(stdout,"%ld",d);
}


fclose(stdin);
fclose(stdout);
return 0;
}