using System;

public class Program

{

    public static void Main()

    {

    int student;

        student=int.Parse(Console.ReadLine());

        double excellentstudent, percent;

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

        percent =  excellentstudent/student*100;

        Console.WriteLine("Процентът на отличниците е {0:#.##}", percent);

    }

}