13 lines
217 B
Python
13 lines
217 B
Python
import re
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import sys
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pattern = re.compile(r"(^((?!T)[A, G, C, U])*$)|(^((?!U)[A, G, C, T])*$)")
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for line in sys.stdin:
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x = re.findall(pattern, line)
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if x:
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print('yes')
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else:
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print("no")
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