mex_of_2.java

package coding_club_assignment_tips;

import java.util.Scanner;

public class mex_of_2 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner in=new Scanner(System.in);
		int A=in.nextInt();
		int B=in.nextInt();
		int i=0;
		while(A==i||B==i) {
				i++;
			}
			System.out.println(i);
		}
	}