#include<bits/stdc++.h>
using namespace std;

#define int long long

typedef long long ll;
typedef pair<int,int>pint;
typedef vector<int>vint;
typedef vector<pint>vpint;
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define ln <<endl
#define all(v) (v).begin(),(v).end()
#define rep(i,n) for(int i=0;i<(n);i++)
#define reps(i,f,n) for(int i=(f);i<(n);i++)
#define each(it,v) for(__typeof((v).begin()) it=(v).begin();it!=(v).end();it++)
template<class T,class U>void chmin(T &t,U f){if(t>f)t=f;}
template<class T,class U>void chmax(T &t,U f){if(t<f)t=f;}

int N,H,ox,oy;
int L[200][200];
const int dxy[]={-1,0,1,0,-1};
int dist[200][200];
int calc(int start,int goal){
    if(start<0||goal<0)return 1<<25;
    fill_n(*dist,200*200,1<<25);
    dist[start/N][start%N]=0;
    priority_queue<pint,vector<pint>,greater<pint>>que;
    que.push(pint(0,start));
    while(que.size()){
        int c,v;
        tie(c,v)=que.top();que.pop();
        int y=v/N,x=v%N;
        if(dist[y][x]<c)continue;
        rep(i,4){
            int ny=y+dxy[i],nx=x+dxy[i+1];
            if(ny<0||ny>=N||nx<0||nx>=N||dist[ny][nx]<=c+L[ny][nx])continue;
            dist[ny][nx]=c+L[ny][nx];
            que.push({dist[ny][nx],ny*N+nx});
        }
    }
    return dist[goal/N][goal%N];
}

signed main(){
    cin>>N>>H>>ox>>oy;ox--;oy--;
    rep(i,N)rep(j,N)cin>>L[i][j];

    int A=calc(0,oy*N+ox);
    int B=calc(oy*N+ox,N*N-1);
    int C=calc(0,N*N-1);

    if((A<H&&B<(H-A)*2)||C<H)cout<<"YES"<<endl;
    else cout<<"NO"<<endl;
    return 0;
}