import java.util.Scanner;
public class Main { 
    public static void main(String[] args) { 
        Scanner sc = new Scanner(System.in); 
        while (true) { 
        int H = sc.nextInt(); 
        int W= sc.nextInt(); 
        if (H == 0 && W == 0) { 
            break; 
            } 
        } 
    } 
}
