$inf = 1e100

def nCr n,r,t
  res = 1
  r.times { |i|
    res*=n-i; res/=(i+1)
    return $inf if res > t
  }
  res
end

gets.to_i.times do
  d,x,t = gets.chomp.split.map(&:to_i)
  puts nCr(x+d-1,d-1,t) > t ? "ZETUBOU" : "AC"
end