import java.util.*;


public class Main{
    public static void main(String args[]){

        Scanner sc = new Scanner( System.in );
        int N = sc.nextInt();
        while( N-- != 0 ){
            int a = sc.nextInt();
            int b = sc.nextInt();
            int c = 0;
            if( a == b ){
                c = 61;
            }else if( Math.max(a,b) == a ){
                c = 62;
            }else{
                c = 60;
            }
            System.out.printf( "%c\n", c );
        }
    }
}