import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.StringTokenizer;

public class Back_10817 {
    public static void main(String[] args) throws IOException {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        int arr[] = new int[3];

        for(int i=0;i<arr.length;i++){
            arr[i] = Integer.parseInt(st.nextToken());
        }
        Arrays.sort(arr);
        System.out.println(arr[1]);
    }
}