// Work out what the tiny function "order" is obviously trying to do
// (ignore its cout's when doing that).
// Make sure you undersdtand why it doesn't work.
//
// The way to make it work is to change the parameters to (int & a, int & b)
// that makes them reference parameters.



#include <iostream>

using namespace std;

void order(int a, int b)
{ cout << "received " << a << ", " << b << "\n";
  if (a > b)
  { cout << "swapping\n";
    int t = a;
    a = b;
    b = t; }
  cout << "at end " << a << ", " << b << "\n"; }

int main()
{ while (true)
  { int x, y;
    cin >> x >> y;
    order(x, y);
    cout << x << " " << y << "\n"; } }