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:
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: 247
,
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: 31
,
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: 219
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#
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print(''):
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: 5
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: 22
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print()
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:
$ python _.py
1
2
3
4
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while True:
= input(' : ')
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:
$ python .py
:
19
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17
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11
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17
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29
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:
: 12
:
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