print("Think of a number between 0 and 100!")

answer = ""

upper = 100

lower = 0

import math as m

while answer != "correct":

guess = m.floor((upper - lower)/2 + lower)

print("Did you guess", guess, "?")

answer = input()

if answer == "correct":

print("You thought of", guess,".")

elif answer == "low":

lower = guess

elif answer == "high":

upper = guess