#include 
using namespace std;

void my_swap(int * a, int * b) {
    int tmp = *a;
    *a = *b;
    *b = tmp;
}
int main() {
    int a, b;
    cin >> a >> b;
    
    my_swap(&a, &b);
    cout << a << " " << b << endl;
    return 0;
}
/*
 5
 1 2 3 4 5
 5
 **/