using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Diagnostics.SymbolStore;
using System.Linq;
using System.Text;

class Program
{
    static void Main()
    {
        int lines = Convert.ToInt32(Console.ReadLine());
        double percent = 0.35;   // can be "readline" for custom discount, current 65%
        double discount;
        string result = "";
        for (int i = 0; i < lines; i++)
        {
            double digit = Convert.ToDouble(Console.ReadLine());
            discount = digit * percent;
            result =$"{result:F2}{discount:F2}\n";
        }

        Console.WriteLine($"{result:F2}");

    }
}