message: Update palindromic-substrings.py
diff: @@ -20,5 +20,5 @@ class Solution(object):
  if i+P[i] > R:
  C, R = i, i+P[i]
  return P
  - return sum((max_len+1)/2 for max_len in manacher(s))
  + return sum((max_len+1)//2 for max_len in manacher(s))
  