import java.io.*;

public class Pair {
    public static void main(String[] args) throws Exception {
        //write your code here
        BufferedReader reader = new BufferedReader (new InputStreamReader(System.in));

        String num1 = reader.readLine();
        String num2 = reader.readLine();
        String num3 = reader.readLine();

        if (num1==num2){
        	System.out.println(num1+" "+num2);
        }
        else if(num1==num3){
        	System.out.println(num1+" "+num3);
        }
        else if(num2==num3){
        	System.out.println(num2+" "+num3);
        }



    }
}