import java.util.Scanner;

public class Main {
	
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		final int N = sc.nextInt();
		for(int i = 0; i != N; i++){
			final int a = sc.nextInt();
			final int b = sc.nextInt();
			
			if(Integer.signum(a - b) == 1){
				System.out.println((char)(0x3e));
			}else if(Integer.signum(a - b) == 0){
				System.out.println((char)(0x3d));
			}else{
				System.out.println((char)(0x3c));
			}
		}
	}
}