using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace TheBiggestofFiveNumbers
{
    class TheBiggestofFiveNumbers
    {
        static void Main(string[] args)
        {
            Console.Write("number: ");
            double number1 = Convert.ToDouble(Console.ReadLine());
            Console.Write("number: ");
            double number2 = Convert.ToDouble(Console.ReadLine());
            Console.Write("number: ");
            double number3 = Convert.ToDouble(Console.ReadLine());
            Console.Write("number: ");
            double number4 = Convert.ToDouble(Console.ReadLine());
            Console.Write("number: ");
            double number5 = Convert.ToDouble(Console.ReadLine());

            double maxNumber = Double.MinValue;
            maxNumber = number1;
            if (number2 >= maxNumber)
            {
                maxNumber = number2;
            }

            if (number3 >= maxNumber)
            {
                maxNumber = number3;
            }

            if (number4 >= maxNumber)
            {
                maxNumber = number4;
            }

            if (number5 >= maxNumber)
            {
                maxNumber = number5;
            }

            Console.WriteLine("Maximum number is: {0}.", maxNumber);
        }
    }
}