print('n = 123')
print('f = 456.789')
print('s1 = \'Hello,world\'')
print('s2 = Hello,\\\'Adam\\\'')
print('s3 = r\'Hello, \"Bart\"\'')
print(''''s4 = r\'\'\'Hello,
...Lisa\'\'\'''')
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柴哲远
print('n = 123')
print('f = 456.789')
print('s1 = \'Hello,world\'')
print('s2 = Hello,\\\'Adam\\\'')
print('s3 = r\'Hello, \"Bart\"\'')
print(''''s4 = r\'\'\'Hello,
...Lisa\'\'\'''')