using System;
using System.Collections.Generic;
using System.Linq;
using static System.Console;

class Program
{
    static void Main()
    {
        var N = int.Parse(ReadLine());
        for (int i = 0; i != N ; i++)
        {
            var a = ReadLine().Split().Select(int.Parse).ToArray();
            if (a[0] == a[1]) WriteLine("=");
            else if (a[0].CompareTo(a[1]).ToString().First()!='-') WriteLine((char)0x3E);
            else WriteLine((char)0x3C);
        }
    }
}