#include <iostream>
using namespace std;

/* Define your function here */
void SwapValues(int& userVal1, int& userVal2)
{
   int a = userVal1;
   userVal1 = userVal2;
   userVal2 = a;
   cout << userVal1 << " " << userVal2 << endl;

}

int main() {
   /* Type your code here. Your code must call the function.  */
   int userVal1;
   int userVal2;
   cin >> userVal1 >> userVal2;
   SwapValues(userVal1, userVal2);
   return 0;
}