i = 0
a, _, b = monkeys["root"]
while not find("root"):
    x = find(a)
    y = find(b)
    divisor = 100
    if abs(x - y) < 10000:
        i += 1
    else:
        if abs(x - y) > 0:
            i += abs(x - y) // divisor
        else:
            i -= abs(x - y) // divisor
    monkeys["humn"] = i
print(i)