print('n = 123')
print('f = 456.789')
print("s1 = 'Hello,world'")
print("s2 = 'Hello,\\\'Adam\\\''")
print("s3 = r'Hello,\"Bart\"'")
print("s4 = r\'\'\'Hello,\nLisa!\'\'\'")
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Xxiangq
print('n = 123')
print('f = 456.789')
print("s1 = 'Hello,world'")
print("s2 = 'Hello,\\\'Adam\\\''")
print("s3 = r'Hello,\"Bart\"'")
print("s4 = r\'\'\'Hello,\nLisa!\'\'\'")