Resource power

Given A number of small$-$size resources and B number of medium$-$size resources and C number of large$-$size resources. A valid resource system is a system of $3$ resources in which all resources are of the same type or all resources are of a different type.

You are given integers A$,$ B$,$ and C$.$ Print the maximum number of valid resource systems you can make with available resources.

Function description

Complete the function Resource$().$ This function takes the following $3$ parameters and returns the required answer.

A$.$ Represents the number of small$-$sized resources

B Represents the number of medium$-$sized resources

C Represents the number of large$-$sized resources

Input format for custom testingNote: Use this input format if you are testing against custom input or writing code in a language where we don't provide boilerplate code

The first line contains an integer A denoting the number of small$-$sized resources

The second line contains an integer B denoting the number of medium$-$sized resources.

The third line contains an integer C denoting the number of large$-$sized resources

Output format

Print the maximum number of valid resource systems you can make with available resources.

Constraints

$0$A$,$ B$,$C $10$

Sample input

Sample output