abc31a.java

import java.util.Scanner;
 
public class Main {
 
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int a=sc.nextInt();
		int b=sc.nextInt();
		int ap=(a+1)*b;
		int bp=a*(b+1);
		int res;
		if(ap>bp){
			res=ap;
		}else{
			res=bp;
		}
		System.out.println(res);
 
		sc.close();
	}
 
}