#include <stdio.h>

int reverse(int a[], int n)
{
	int i,b;
	for(i=0; i<n/2; i++)
    {
     b=a[i];
  	 a[i]=a[n-1-i];
  	 a[n-1-i]=b;
    }
    return 0;
}

int main(void) {
	int a[]={1,3,4,6,8,9},i,n=6;
	
	reverse(a,n);
	
	for(i=0; i<n; i++)
	{
	 printf("%d ",a[i]);
	}
	
	// your code goes here
	return 0;
}