18 lines
212 B
Python
18 lines
212 B
Python
sum = 0
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memo = [1,2]
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while True:
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i = len(memo)
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a = memo[i-1]
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b = memo[i-2]
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if a+b > 4000000:
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break
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memo.append(a+b)
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for i in memo:
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if (i % 2 == 0):
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sum += i
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print(sum)
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