import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;

public class P49 {

    public static void main(String[] args) throws IOException {
        // TODO Auto-generated method stub
        Scanner in = new Scanner(System.in);  
        System.out
 
.println("請依次輸入學生號，姓名，三門課成績，用逗號隔開,每個學生之間用句號隔開");  
        String str = in.next();  
        String[] student = str.split("\\.");  
        for(int i=0;i<student.length;i++)
        {  
            System.out.print(student[i]+" ");  
        }  
        BufferedWriter bw = new BufferedWriter(new FileWriter("F:\\stud.txt"
 
));  
        for (int i = 0; i < student.length; i++) 
        {  
            String[] scores = student[i].split("\\,");  
            bw.write(student[i]);  
            int[] num1 = new int[3];  
            int sum = 0;  
            for (int m = 0; m < 3; m++) 
            {  
                num1[m] = Integer.parseInt(scores[m + 2
 
]);  
                sum += num1[m];  
            }  
            bw.write(".平均分：" + sum/3);  
            System.out.println(sum/3);  
        }  
        bw.flush();  
        in.close();  
    }

}