#include <iostream>
  
int main() {
  int a;
  int b;
  std::cin >> a; // = 1 in the example
  std::cin >> b; // = 2 in the example
  a = a^b; // a is the XOR of a and b
  b = a^b; // b is (a^b)^b = a^(b^b) = a^0 = a
  a = a^b; // b's value is a at this point, so: a = a^b^a = b^(a^a) = b^0 = b
  std::cout << a << std::endl;
  std::cout << b << std::endl;

  return 0;
}