14 lines
194 B
Python
14 lines
194 B
Python
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#!/usr/bin/env python3
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lim = 10**12
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x, y = 3, 1
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blue = 3
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total = 4
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while total <= lim:
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x, y = 3*x + 8*y, 3*y + x
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blue = (2*y + x + 1) // 2
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total = (4*y + x + 1) // 2
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print(blue)
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