#include <iostream>
using namespace std;

// write your code here......
void f(int *p1,int *p2)
{
    int t=*p1;
    *p1=*p2;
    *p2=t;
}

int main() {

    int m, n;
    cin >> m;
    cin >> n;

    // write your code here......
    f(&m,&n);

    cout << m << " " << n << endl;

    return 0;
}