include <stdio.h>
int main() {
int n, m, a, b, c, d;
scanf("%d %d", &n, &m);
a = m - 2 * n;
b = a / 2;
c = 4 * n - m;
d = c / 2;
if (b + d == n && 4 * b + 2 * d == m) {
printf("%d ", d);
printf("%d", b);
} else {
printf("NULL");
}
return 0;
}