//e-olymp 108. Среднее число

import java.util.*;
import java.lang.*;
import java.io.*;

class SecondLab
{
	public static void main (String[] args) throws java.lang.Exception
	{
		int a, b, c, average;
		Scanner input = new Scanner(System.in);
		a = input.nextInt();
		b = input.nextInt();
		c = input.nextInt();
		
		if((a > b && b > c)||(c > b && b > a))
			average = b;
		else if ((b > a && a > c)||(c > a && a > b ))
			average = a;
		else
			average = c;
		System.out.println(average); 
	}
}