Why is my script is opening then closing immediately when it shouldn't? (Python)

I'm trying to make a warmer / colder game in python as a project. Currently, when I open the program it closes immediately despite there being several loops and inputs. I have spent a good 2 hours on it, and I can't figure it out. Any tips?

import random
Correct = random.randint(1, 100)
Oldval = 50
Newval = 50
while Newval != Correct:
    Newval = Newval + input("How much do you want to move?")
    if (Newval - Correct) > (Oldval - Correct):
        print("Colder!")
    else:
        print("Warmer!")
    Oldval = Newval
Win = input(You Win!)