a, b = input().split()
c, d = input().split()
a = int(a)
b = int(b)
c = int(c)
d = int(d)

peremig = "T"

if a + d > c + b:
    peremig = "U"

elif a + d < c + b:
    peremig = "P"

elif a + d == c + b:
    if d > b:
        peremig = "U"
    elif d < b:
        d > b

print(peremig)