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

 int main() {
     int x,y;
     
     if(scanf("%d",&x) != 1) {
         return 0;
     }
     if(scanf("%d",&y) !=1) {
         return 0;
     }
     if(x < -100 || x > 100 || y < -100 || y > 100) {
         printf("Invalid input");
         return 0;
     }
     swap(&a,&y);
     
     printf("%d\n%d", x,y);
     return 0;
 }