import java.util.Scanner;
import java.io.*;
public class Test1011
{
    public static void main (String[] args) 
    {
        int math,eng,comp,average;
        Scanner in=new Scanner(System.in);
        math=in.nextInt();
        eng=in.nextInt();
        comp=in.nextInt();
        
        average=(math+eng+comp)/3;
        System.out.print("输入的<数学>成绩: "+math+"\n"+"输入的<英语>成绩: "+eng+"\n"+"输入的<计算机基础>成绩："+comp+"\n");
        System.out.println("平均成绩："+average);
        
        
        
    }
}