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17 lines
499 B
Python
17 lines
499 B
Python
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# -*- coding: utf-8 -*-
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# Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be:
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# 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...
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# Find the sum of all the even-valued terms in the sequence which do not exceed four million.
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limit = 4000000
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#limit = 90
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last = [0, 1]
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x = 1
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total = 0
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while (x < limit):
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if (0 == x % 2):
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total += x
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last.append(x)
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last = last[-2:]
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x = sum(last)
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print 'Answer', total
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