using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("task 1");

        int num=105;

        char a=(char)num;

        Console.Write(a);

        int num2=102;

        char b=(char)num2;

        Console.Write(b);

        int num3=97;

        char c=(char)num3;

        Console.Write(c);

        int num4=116;

        char d=(char)num4;

        Console.WriteLine(d);

        Console.WriteLine("task 2");

        double y=double.Parse(Console.ReadLine());

        double m=double.Parse(Console.ReadLine());

        double x=double.Parse(Console.ReadLine());

        double s=(y+m+x)/3;

        Console.WriteLine(s);

        int z=(int)s;

        Console.WriteLine(z);

        Console.WriteLine("task 3");

        int o=70;

        int r=50;

        double n=35.7;

        double ch=double.Parse(Console.ReadLine());

        Console.WriteLine((o+r+n)*ch);

        Console.WriteLine(o+r+n);

    }

}