Kehillah lottery ticket has three integers printed on it: a, b, and c. You win according to the following rules, checked sequentially in order: 1. If two numbers or more are the same, and all the numbers are above 10, you win $20. 2. If three numbers are the same, and are below 15, you win $40. 3. If all numbers are different, you win $30. Otherwise, you do not win anything. Write a function that returns your winnings.