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