#include <stdio.h>
void swap(int * a, int * b){
	int temp;
	temp = * a;
	* a = * b;
	* b = temp;
}
int main()
{
	int a,b;
	scanf("%d%d",&a,&b);
	int *t1,*t2;
	t1=&a;
	t2=&b;
	swap(t1,t2);
	printf("%d %d\n",t1,t2); 
	printf("%d %d\n",*t1,*t2);
	return 0;
}