using System;
using System.IO;
using System.Linq;

class AddRev
{
	const string FileName = "/home/red-agent/AddRev.in";
	
	static void Main()
	{
		foreach (string line in File.ReadAllLines(FileName))
		{
			string[] tokens = line.Split(' ');
			int[] operands = new int[tokens.Length];
			for (int i = 0; i < operands.Length; i++)
			{
				operands[i] = int.Parse(new string(tokens[i].Reverse().ToArray()));
			}
			Console.WriteLine(operands.Sum().ToString().TrimEnd('0').Reverse().ToArray());
		}
	}
}