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