{
	class Program
	{
		public static void Main(string[] args)
		{
			int n= int . Parse (Console .ReadLine ());
			int revnum=0;
			int a=ReversedNumber(n,revnum );
			Console .Write (a);
			Console.ReadKey(true);
		}
		static int ReversedNumber (int n, int revnum)
		{
			while (n!=0)
			{
				int m=n%10;
				revnum=revnum *10+m;
				n=n/10;
			}
			return revnum;
		}
		
	}
}