12 lines
261 B
Plaintext
12 lines
261 B
Plaintext
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#!/usr/bin/python3
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import sys
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import re
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for input in sys.stdin.readlines():
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answer = re.search('^([1-9]{6}|0[1-9]{5}|[1-9]{1}0[1-9]{4}|[1-9]{2}0[1-9]{3}|[1-9]{3}0[1-9]{2}|[1-9]{4}0[1-9]{1}|[1-9]{5}0)$',input);
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if answer:
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print("yes")
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else:
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print("no")
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