include <stdio.h>
int main() {
int n, m, w = 0;
scanf("%d%d", &n, &m);
for (int x = 0; x <= n; x++) { //鸡
for (int y = 0; y <= n; y++) {
//兔
if (x + y == n && x * 2 + y * 4 == m) {
printf("%d %d", x, y);
w++;
}
}
}
if (w == 0) {
printf("NULL");
}
return 0;
}