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201803-1(Python实现)

201803-1(Python实现)

作者: tmax | 来源:发表于2019-12-09 22:18 被阅读0次
reList = list( map(int, input().split()) )

output = 0
count = 0

for ele in reList:
    if ele == 2:
        count += 1
    else:
        count = 0
    if count == 0:
        if ele == 1:
            output += 1
    else:
        output += count*2
print(output)

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