9 lines
322 B
Python
9 lines
322 B
Python
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import sys
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import re
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for line in sys.stdin:
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numbers = re.match(r'^[a-ząćęłńóśźżA-ZĄĆĘŁŃÓŚŹŻ]([a-zA-ZąćęłńóśźżĄĆĘŁŃÓŚŹŻ]*[a-zA-ZąćęłńóśźżĄĆĘŁŃÓŚŹŻ])?$', line.replace("\n", ""), flags=re.IGNORECASE)
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if numbers:
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print('yes')
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else:
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print("no")
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