import sys

Q = input()
for i in range(Q):
    line = raw_input().split()
    a = 1
    b = int(line[2])
    p = int(line[1])+1
    for j in range(int(line[0])-1):
        a *= p
        p += 1
    p = 2
    for j in range(int(line[0])-2):
        a /= p
        p += 1
    if b < a:
        print "ZETUBOU"
    else:
        print "AC"