from collections import deque
def bfs(H, W, L, sx, sy, gx, gy, V, Ox, Oy):
    def _bfs():
        while Queue:
            x,y = Queue.popleft()
            for i in range(len(dx)):
                nx,my = x + dx[i], y + dy[i]
                if nx < 0 or H <= nx or my < 0 or W <= my:
                    continue
                if Cost[nx][my] < Cost[x][y] - L[nx][my]:
                    Cost[nx][my] = Cost[x][y] - L[nx][my]
                    Queue.append((nx, my))
    INF = -10
    dx = [0, 0, -1, 1]
    dy = [-1, 1, 0, 0]
    Cost = [[INF] * W for _ in range(H)]
    Cost[sx][sy] = V
    Queue = deque()
    Queue.append((sx, sy))
    _bfs()
    Cost[Ox][Oy] *= 2
    Queue.append((Ox, Oy))
    _bfs()
    return Cost[gx][gy]

N,V,Ox,Oy = map(int,input().split())
L = [list(map(int,input().split())) for _ in range(N)]
if bfs(N, N, L, 0, 0, N-1, N-1, V, Ox-1, Oy-1) > 0:
    print('YES')
else:
    print('NO')