using System;

public class Program

{

    public static void Main()

    {

        string input1 = Console.ReadLine();

        int operand1 = Convert.ToInt32 (input1);

        string input2 = Console.ReadLine();

        int operand2 = Convert.ToInt32 (input2);

        int operand3 = 5*operand1;

        int operand4 = (int)Math.Sqrt(operand2);

        int operand5 = ( operand2 - operand1);

        int calculationResult = (operand3+operand4)/operand5;

        Console.WriteLine(calculationResult);

    }

}