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

namespace OddOrEvenProduct
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            string numbers = Console.ReadLine();
            int[] numbersArray = numbers.Split(';').Select((Func<string, int>)Convert.ToInt32).ToArray();

            int sum = numbers[0] + numbers[1];
            Console.WriteLine(sum);

        }
    }
}