using System;

class student

{

string name;

public student(string name)

{

this.name=name;

}

public double sum(int x,int y,int z)

{

return x+y+z;

}

public double av(double x,double y,double z,double w)

{

return (x+y+z+w)/4;

}

public void print(double sum,double av)

{

Console.WriteLine(name+"  "+sum+"   "+av);

}

}

public class Program

{

    public static void Main()

    {

student ahmad=new student("Ahmad");

double sum=ahmad.sum(90,50,67);

sum=sum/3;

double sum1=ahmad.sum(90,79,90);

sum1=sum1/3;

double sum2=ahmad.sum(90,98,77);    

sum2=sum2/3;

double sum3=ahmad.sum(66,55,80);        

sum3=sum3/3;

double av=ahmad.av(sum,sum1,sum2,sum3);

double to=sum+sum1+sum2+sum3;

ahmad.print(to,av);

​

    }

}