DecimalToBinaryNumber

using System;

namespace Decimal_to_Binary_Number
{
	class DecimalToBinaryNumber
	{
		public static void Main(string[] args)
		{
			long dec = long.Parse(Console.ReadLine());
			string binElement = "";
			while (dec != 0)
			{
				int remain = (int) dec % 2;
				dec /= 2;
				binElement = remain + binElement;
			}
			Console.WriteLine(binElement);
		}
	}
}