#include <stdio.h>
#include <stdlib.h>

void swap(int *a, int *b){
    int x = *a;
    *a = *b;
    *b = x;
    
}

int main() {
    int a, b;
    scanf("%d %d", &a, &b);
    swap(&a, &b);
    printf("%d\n", a);
    printf("%d\n", b);
    return 0;
}