Here is the code (python 3.6). Can anyone explain, why it fails on test 9?


import math
string = input().split()
start = int(string[0])
end = int(string[1])
commission = int(string[2])
if start <= end:
    n = 0
else:
    q = 1 - commission / 100
    n = math.log((end / start), q)
    n = round(n)
print(n)

Use float / double instead of int !