22 lines
420 B
Python
22 lines
420 B
Python
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'''(sqrt(num) + a) / b'''
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def con_frac(num):
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a, b = 0, 1
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para = []
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while b and (a, b) not in para:
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d = int((num ** 0.5 + a) / b)
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yield d
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para.append((a, b))
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a = b * d - a
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b = (num - a ** 2) // b
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def count(limit):
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total = 0
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for x in range(2, limit + 1):
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if not len(list(con_frac(x))) % 2:
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total += 1
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return total
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print(count(10000))
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