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First solution in Clear category for Stair Steps by pokosasa
def checkio(numbers):
memo={}
def solve(n):
if n in memo:
return memo[n]
if n==len(numbers):
return 0
if n==len(numbers)-1:
return numbers[-1] if numbers[-1]>0 else 0
memo[n]=max(numbers[n]+solve(n+1),numbers[n+1]+solve(n+2))
return memo[n]
return solve(0)
#These "asserts" using only for self-checking and not necessary for auto-testing
if __name__ == '__main__':
assert checkio([5, -3, -1, 2]) == 6, 'Fifth'
assert checkio([5, 6, -10, -7, 4]) == 8, 'First'
assert checkio([-11, 69, 77, -51, 23, 67, 35, 27, -25, 95]) == 393, 'Second'
assert checkio([-21, -23, -69, -67, 1, 41, 97, 49, 27]) == 125, 'Third'
print('All ok')
June 1, 2020
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