using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var x = new int[] {1,9,9,7};

        string xYear = string.Empty;

        foreach(int num in x){

        xYear += num.ToString();

        }

        var y = new int[] {2,3,5};

        string yYear = string.Empty;

        foreach(int num in y)

        {

        yYear += num.ToString();

        }

        var sum = Int32.Parse(xYear) + Int32.Parse(yYear);

        Console.WriteLine(sum);

    }

}