using System;
using System.Collections.Generic;
using System.Text;
class Program
{
    public void Proc()
    {
        Reader.IsDebug = false;
        int[] inpt = Reader.GetInt();

        int mapLength = inpt[0];
        int maxTairyoku = inpt[1];
        int oasisX = inpt[2] - 1;
        int oasisY = inpt[3] - 1;

        int[,] map = new int[mapLength, mapLength];

        int[,] step = new int[mapLength, mapLength];

        for (int i = 0; i < mapLength; i++)
        {
            inpt = Reader.GetInt();
            for (int j = 0; j < mapLength; j++)
            {
                map[i, j] = inpt[j];
            }
        }

        step[0, 0] = maxTairyoku;
        Queue<int[]> task = new Queue<int[]>();
        task.Enqueue(new int[] { 0, 0 });
        while (task.Count > 0)
        {
            int[] pos = task.Dequeue();
            int x = pos[0];
            int y = pos[1];

            List<int[]> nextPos = new List<int[]>();
            if (x > 0)
            {
                nextPos.Add(new int[] { x - 1, y });
            }
            if (x < mapLength - 1)
            {
                nextPos.Add(new int[] { x + 1, y });
            }
            if (y > 0)
            {
                nextPos.Add(new int[] { x, y - 1 });
            }
            if (y < mapLength - 1)
            {
                nextPos.Add(new int[] { x, y + 1 });
            }
            int nowHP = step[y, x];
            foreach (int[] nextP in nextPos)
            {
                int nextX = nextP[0];
                int nextY = nextP[1];
                if (map[nextY, nextX] < nowHP)
                {
                    int nextHp = nowHP - map[nextY, nextX];
                    if (nextX == oasisX && nextY == oasisY)
                    {
                        nextHp *= 2;
                    }
                    if (nextHp > step[nextY, nextX])
                    {
                        step[nextY, nextX] = nextHp;
                        task.Enqueue(new int[] { nextX, nextY });
                    }
                }
            }
        }
        if (step[mapLength - 1, mapLength - 1] > 0)
        {
            Console.WriteLine("YES");
        }
        else
        {
            Console.WriteLine("NO");
        }


    }

    public class Reader
    {
        public static bool IsDebug = true;
        private static String PlainInput = @"
 



 
";
        private static System.IO.StringReader Sr = null;
        public static string ReadLine()
        {
            if (IsDebug)
            {
                if (Sr == null)
                {
                    Sr = new System.IO.StringReader(PlainInput.Trim());
                }
                return Sr.ReadLine();
            }
            else
            {
                return Console.ReadLine();
            }
        }
        public static int[] GetInt(char delimiter = ' ')
        {
            string[] inpt = ReadLine().Split(delimiter);
            int[] ret = new int[inpt.Length];
            for (int i = 0; i < inpt.Length; i++)
            {
                ret[i] = int.Parse(inpt[i]);
            }
            return ret;
        }
    }
    static void Main()
    {
        Program prg = new Program();
        prg.Proc();
    }
}