Competitions

# Week 1 Introduction Part 1

# Tuck-shop

In the school cafeteria to the end of lessons there were some cakes: a vanilla, b chocolate and c fruit. Dima is going to buy cakes before closing the buffet. What is the maximum possible number of cakes can choose Dima?

## Input data

Three non-negative integers are given - the appropriate amount of cakes, each does not exceed 20000.

## Output data

Print the maximum possible number of cakes that Dima can choose.

## Examples

Input example #1

4 2 3

Output example #1

9