message: Update longest-well-performing-interval.py
diff: @@ -15,7 +15,7 @@ class Solution(object):
  result = i+1
  elif accu-1 in lookup:
  # lookup[accu-1] is the leftmost idx with smaller accu,
  - # because from 1 to some positive k,
  + # because for i from 1 to some positive k,
  # lookup[accu-i] is a strickly increasing sequence
  result = max(result, i-lookup[accu-1])
  lookup.setdefault(accu, i)
  