print('''n = 123
f = 456.789
s1 = \'Hello, world\'
s2 = \'Hello,\\\'Adam\\\''
s3 = r\'Hello, \"bart\"'
s4 = r\'''Hello,
Lisa!\'''
''')
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黑烏鴉
print('''n = 123
f = 456.789
s1 = \'Hello, world\'
s2 = \'Hello,\\\'Adam\\\''
s3 = r\'Hello, \"bart\"'
s4 = r\'''Hello,
Lisa!\'''
''')