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OA :@MRTRUELIVING_IX
class Solution:
def checkDuplicateDeliveryIDs(self, deliveryIDs, timeWindow):

last_seen = {}

for i, deliveryID in enumerate(deliveryIDs):
if deliveryID in last_seen and i - last_seen[deliveryID] <= timeWindow:
return True
last_seen[deliveryID] = i

return False

Delivary IDs ๐Ÿ‘