2024-01-07 21:21:03 +01:00
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import re
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import sys
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2024-01-14 17:25:11 +01:00
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def switch_case(m):
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return m.group(0).swapcase()
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2024-01-07 21:21:03 +01:00
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2024-01-14 17:25:11 +01:00
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if __name__ == "__main__":
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for _, l in enumerate(sys.stdin, start=1):
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p = re.compile(r'\b(?:[a-ząćęłńóśźż]+[A-ZĄĆĘŁŃÓŚŹŻ]|[A-ZĄĆĘŁŃÓŚŹŻ]+[a-ząćęłńóśźż]+)\w*\b')
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r = p.sub(switch_case, l)
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print(r, end="")
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