#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;

const int DY[] = {-1,0,1,0};
const int DX[] = {0,1,0,-1};

int N, V, OX, OY, L[200][200];
bool visited[200][200][1001][2], ok = false;

void f(int y, int x, int v, int flag){
    if(ok)return;
    visited[y][x][v][flag] = true;
    if(x == N - 1 && y == N - 1){
        ok = true;
        return;
    }
    if(OY == y&&OX == x && !flag){
        flag = 1;
        v *= 2;
    }
    rep(i, 4){
        int ny = y + DY[i], nx = x + DX[i], nv;
        if(ny >= 0 && ny < N&&nx >= 0 && nx < N){
            nv = v - L[ny][nx];
            if(nv > 0 && !visited[ny][nx][nv][flag]){
                f(ny, nx, nv, flag);
            }
        }
    }
}

int main(){
    cin >> N >> V >> OX >> OY;
    --OX; --OY;
    rep(y, N)rep(x, N)scanf("%d", &L[y][x]);
    f(0, 0, V, 0);
    puts(ok ? "YES" : "NO");
}