I’m fairly new to python and recently started solving Kattis problems to practice.
Somehow, I managed to pass 7/19 of the test cases of this problem and I can’t figure out why I can’t pass 19/19 of the test cases. Can someone help?

This is my code:

import math
def price(n):
base=math.ceil(n/100)
nine=base*100-1
return nine

if name == “main“:
import sys
n = int(sys.stdin.readline().strip())
print(price(n))