15 lines
162 B
Python
15 lines
162 B
Python
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a = 1
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b = 1
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c = 2
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index = 3
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while True:
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a = b
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b = c
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c = a + b
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index += 1
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if len(str(c)) >= 1000:
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break
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print(index)
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# Solution: 4782
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