# DMOJ ccc19j1 (Accepted)

apple3s = int(input())
apple2s = int(input())
appleFree = int(input())
banana3s = int(input())
banana2s = int(input()) 
bananaFree = int(input())
appleScore = (apple3s * 3) + (apple2s * 2) + appleFree
bananaScore = (banana3s * 3) + (banana2s * 2) + bananaFree
if appleScore > bananaScore: 
	print("A")
elif bananaScore > appleScore:
	print("B")
elif appleScore == bananaScore:
	print("T")