The city of Minneapolis has an ordinance forbidding prostitution, the maximum penalty for its violation being $100 fine or 90 days in the workhouse, or both. Minneapolis Code of Ordinances, ?? 870.110, 1.120. In 1967 our state legislature enacted Minn. St. 609.32, subd. 4(1) (L. 1967, c. 507, ? 9, subd. 4[1]), which forbids prostitution and provides a maximum penalty of one years imprisonment or payment of a fine of $1,000, or both.