import java.util.*;
import java.lang.*;
import java.io.*;

// The main method must be in a class named "Main".

    class StudentsData {
    
             int math,hindi,english, science;
       
             String name,fname,classs,dob,id, mobile;
    
    public  void result() {
          
             System.out.println("The result of "+name);
             float result = (math+hindi+english+science)/4f;
             System.out.println("= "+result+"%");
  }  
      
    public void info(){
        
             System.out.println("<<<<<INFORMATION>>>>>\nName="+name+"\nFather name ="+fname+"\nClass="+classs+"\nD.O.B = "+dob+"\nMob No.="+mobile+"\nStudent ID ="+id);
              
 }
      // all school data
 
    public void data(){ 
      System.out.println("s1,s2.... are students [ID]");
      System.out.println(" s1 = Hariprasad Daku\n s2 = Tonny Kakkar \n s3 = Riya Singh\n s4 = Yash Solanki \n s5 = Tannu Rajhh  \n s6 = Tina Malviya ");
   
      
 }   
   
   
     }

class Main {
  public static void main(String[] args) {
      System.out.println("Hello World School :°:");
 
      // object  define 
    
      StudentsData s1 = new StudentsData();
      StudentsData s2 = new StudentsData();
      StudentsData s3 = new StudentsData();
      StudentsData s4 = new StudentsData();
      StudentsData s5 = new StudentsData();
      StudentsData s6 = new StudentsData();
      StudentsData school = new StudentsData();
     
      //students names                
      
     s1.name ="Hariprasad Daku";     
     s2.name ="Tonny Kakkar";
     s3.name ="Riya Singh";
     s4.name ="Yash Solanki";
     s5.name ="Tannu Rajhh";
     s6.name ="Tina malviya";
      
     // student id or mobile no
      
     s1.id ="s1";       s1.mobile ="9907897987";
     s2.id ="s2";       s2.mobile ="9908807889";
     s3.id ="s3";       s3.mobile ="9996767577";
     s4.id ="s4";       s4.mobile ="6788579869";
     s5.id ="s5";       s5.mobile ="8988688679";
     s6.id ="s6";       s6.mobile ="6557689778";
   
     // student classs

     s1.classs = "10th-A";
     s2.classs = "9th-B";
     s3.classs = "8th-Extra";
     s4.classs = "11th-B";
     s5.classs = "7th-A";
     s6.classs = "5th-C";
    
     // student D.O.B
   
     s1.dob = "04/09/2007";
     s2.dob = "30/07/2008";
     s3.dob = "15/11/2010";
     s4.dob = "22/08/2004";
     s5.dob = "14/08/2008";
     s6.dob = "01/01/2012";


     // student father name

     s1.fname ="Samandar Singh Daku";
     s2.fname ="Ramu Kakkar";
     s3.fname ="Prakash Singh";
     s4.fname ="Badri Solanki";
     s5.fname ="Kalin Rajhh";
     s6.fname ="Guddu malviya";
     
     // students marks
     s1.math    = 72 ; 
     s1.english = 88 ;
     s1.science = 58 ;
     s1.hindi   = 68 ;
 
     s2.math    = 87 ;
     s2.english = 88 ;
     s2.science = 74 ;
     s2.hindi   = 89 ;
      
     s3.math    = 58 ;
     s3.english = 67 ;
     s3.science = 56 ;
     s3.hindi   = 87 ;
 
     s4.math    = 76 ;
     s4.english = 83 ;
     s4.science = 62 ;
     s4.hindi   = 87 ;
   
     s5.math    = 85 ;
     s5.english = 90 ;
     s5.science = 75 ;
     s5.hindi   = 88 ;
 
 // finished
 
   school.data();
   
   //s1.info();
   s5.result();
    
 
  }
}