import java.util.*;

class Ideone {

    public static int calculateAverage(int a, int b, int c) {
        return (a + b + c) / 3;
    }

    public static void main(String[] args) throws java.lang.Exception {
        Scanner input = new Scanner(System.in);

        System.out.println("ادخل العلامه الاولى");
        int a = input.nextInt();

        System.out.println("ادخل العلامه الثانيه");
        int b = input.nextInt();

        System.out.println("ادخل العلامه الثالثه");
        int c = input.nextInt();

        int average = calculateAverage(a, b, c);

        System.out.println("المعدل = " + average);
    }
}