#include<stdio.h>
void swap(int *a, int *b){
    int temp = *a;
    *a = *b;
    *b = temp;
}
int main(){
    int x, y;
    scanf("%d", &x);
    scanf("%d", &y);
    if (x < -100 || x > 100 || y < -100 || y > 100){
        printf("Invalid Input\n");
    } else {
        swap(&x, &y);
        printf("%d\n", x);
        printf("%d\n", y)
    }
    return 0;
}