import sys
import io, os
input = io.BytesIO(os.read(0,os.fstat(0).st_size)).readline

n, h, ox, oy = map(int, input().split())
ox, oy = ox-1, oy-1
L = [list(map(int, input().split())) for i in range(n)]
dp = [[0]*2 for i in range(n*n)]
dp[0][0] = h
import heapq
q = []
q.append((-h, 0, 0))
heapq.heapify(q)
while q:
    cur_h, v, k = heapq.heappop(q)
    cur_h *= (-1)
    x, y = divmod(v, n)
    for dx, dy in (-1, 0), (1, 0), (0, -1), (0, 1):
        nx, ny = x+dx, y+dy
        if 0 <= nx < n and 0 <= ny < n:
            nv = nx*n+ny
            if cur_h-L[nx][ny] <= 0:
                continue
            if (nx, ny) != (ox, oy):
                if dp[nv][k] < cur_h-L[nx][ny]:
                    dp[nv][k] = cur_h-L[nx][ny]
                    heapq.heappush(q, (-dp[nv][k], nv, k))
            else:
                if k == 0:
                    if dp[nv][k+1] < 2*(cur_h-L[nx][ny]):
                        dp[nv][k+1] = 2*(cur_h-L[nx][ny])
                        heapq.heappush(q, (-dp[nv][k+1], nv, k+1))
                else:
                    if dp[nv][k] < cur_h-L[nx][ny]:
                        dp[nv][k] = cur_h-L[nx][ny]
                        heapq.heappush(q, (-dp[nv][k], nv, k))
ans = max(dp[-1])
if ans <= 0:
    print('NO')
else:
    print('YES')