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First solution in Uncategorized category for Stair Steps by UFO665
# migrated from python 2.7
def checkio(numbers):
lstBin = [b for b in [bin(i)[2:].zfill(len(numbers)) for i in range(2 ** len(numbers))] if "00" not in b]
return max(sum(numbers[i] for i, char in enumerate(b) if char == "1") for b in lstBin)
Feb. 10, 2016