{.checks:off.}
import sequtils,strutils,algorithm,heapqueue
proc getchar_unlocked():char {. importc:"getchar_unlocked",header: "<stdio.h>" .}
proc scan(): int =
  while true:
    let k = getchar_unlocked()
    if k < '0': break
    result = 10 * result + k.ord - '0'.ord
template times*(n:int,body) = (for _ in 0..<n: body)
template `max=`*(x,y)= (x = max(x,y))
template `min=`*(x,y)= (x = min(x,y))

const dxdy4 :seq[tuple[x,y:int]] = @[(0,1),(1,0),(0,-1),(-1,0)]
let N = scan()
let V = scan()
let oax = scan()
let oay = scan()
var L = newSeq[seq[int]](N)
for x in 0..<N: 
  L[x] = newSeq[int](N)
  for y in 0..<N: L[x][y] = scan()
let (ox,oy) = (oax-1,oay-1)
############## 二段階にわける #####################
type field = tuple[x,y,v:int]
proc `<`(x,y:field):bool = (x.v > y.v)
proc twoFactorDijkestra(sx,sy,sv:int,checkOasis:bool = true) =
  var closed = newSeq[seq[bool]](N)
  for x in 0..<N: closed[x] = newSeq[bool](N)
  var opens = newHeapQueue[field]()
  opens.push((sx,sy,sv))
  while opens.len() > 0:
    let (x,y,v) = opens.pop()
    if closed[x][y] : continue
    closed[x][y] = true
    if checkOasis and x == ox and y == oy:
      twoFactorDijkestra(x,y,v * 2,false)
      continue
    for d in dxdy4:
      let (nx,ny) = (d.x + x,d.y + y)
      if nx < 0 or ny < 0 or nx >= N or ny >= N : continue
      var n_v = v - L[ny][nx]
      if n_v <= 0 : continue
      if not closed[nx][ny]:
        opens.push((nx,ny,n_v))
        if nx == N-1 and ny == N-1:
          echo "YES"
          quit()
twoFactorDijkestra(0,0,V)
echo "NO"