51.py

from random import random
from sys import exit

value = 100
steps = 0
while True:
        steps += 1
        if random() < 0.51:
                value *= 0.9
        else:
                value *= 1.1
        print(value)
        if value <= 1:
                print("run out of money after", steps, "steps")
                exit(1)