#include <stdio.h>
void swap(int a, int b) {
    int temp = *a;
    *a = *b;
    *b = temp;
}

int main() {
    int x, y;
    scanf("%d%d", &x, &y);
    if (x < -100 || x > 100 || y < -100 || y > 100){
    printf("Invalid Input\n");
    }else {
        swap(x, y);
        printf("%d\n%d\n", x, y);
    }

    return 0;
}