#include <stdio.h>

main()
{
	int l1, l2, r1, r2;
	unsigned r;

	while ((l1 = getchar()) != EOF) {
		l2 = getchar();
		r1 = getchar();
		r2 = getchar();

		putchar(l1);
		putchar(l2);
		r = (r2 << 8) | r1;
		r = -r;
		putchar(r & 0xff);
		putchar(r >> 8);
	}
	return 0;
}