.
package com.javarush.task.task04.task0441;
/*
Как-то средненько
*/
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
int number1 = Integer.parseInt(reader.readLine());
int number2 = Integer.parseInt(reader.readLine());
int number3 = Integer.parseInt(reader.readLine());
int average = (number1 + number2 + number3) / 3;
System.out.println(average);
}
}