n = int(input())

for _ in range(n):
    a = list(map(int, input().split()))
    a0 = sorted(a)
    a1 = sorted(a, reverse=True)

    if (a0 == a1):
        print("=")
    elif (a == a0):
        print(chr(0x3C))
    else:
        print(chr(0x3E))