import java.util.Scanner;

class Main{
	public static void main(String[]$){
		Scanner s=new Scanner(System.in);
		for(int i=s.nextInt();i!=0;--i) {
			char v=0;
			switch(Integer.compare(s.nextInt(),s.nextInt())){
			case -1:
				v=60;
				break;
			case 0:
				v=61;
				break;
			case 1:
				v=62;
				break;
			}
			System.out.println(v);
		}
	}
}