#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 || y < -100 || x > 100 || y > 100)
    {
        printf("Invalid Input\n");
    }
    else {
        swap(&x,&y):
        printf(" %d\n%d\n ", x,y);
    }
    return 0;
}