#include using namespace std; typedef long long ll; typedef pair< int, int > pii; typedef vector< int > vi; typedef vector< vi > vvi; typedef vector< ll > vl; typedef vector< vl > vvl; typedef vector< pii > vp; typedef vector< vp > vvp; typedef vector< string > vs; typedef vector< double > vd; typedef vector< vd > vvd; template< class T1, class T2 > int upmin( T1 &x, T2 v ){ if( x > v ){ x = v; return 1; } return 0; } template< class T1, class T2 > int upmax( T1 &x, T2 v ){ if( x < v ){ x = v; return 1; } return 0; } const int INF = 0x3f3f3f3f; const int dx[] = { 0, 1, 0, -1 }; const int dy[] = { 1, 0, -1, 0 }; const string msg[] = { "NO", "YES" }; int N, V, Ox, Oy; vvi L; void init(){ cin >> N >> V >> Oy >> Ox; --Ox, --Oy; L = vvi( N, vi( N ) ); for( int i = 0; i < N; ++i ) for( int j = 0; j < N; ++j ) cin >> L[ i ][ j ]; } int dp[ 200 + 1 ][ 200 + 1 ][ 2 ]; int in_range( int n, int x, int y ){ return 0 <= x and x < n and 0 <= y and y < n; } void preprocess(){ memset( dp, 0xff, sizeof( dp ) ); priority_queue< tuple< int, int, int, int > > pq; pq.emplace( dp[ 0 ][ 0 ][ 0 ] = V, 0, 0, 0 ); while( not pq.empty() ){ int v, x, y, t; tie( v, x, y, t ) = pq.top(); pq.pop(); if( v != dp[ x ][ y ][ t ] ) continue; for( int di = 0; di < 4; ++di ){ int nx = x + dx[ di ]; int ny = y + dy[ di ]; if( not in_range( N, nx, ny ) ) continue; int nv = v - L[ nx ][ ny ]; if( nv <= 0 ) continue; if( upmax( dp[ nx ][ ny ][ t ], nv ) ) pq.emplace( nv, nx, ny, t ); if( nx == Ox and ny == Oy and not t and upmax( dp[ nx ][ ny ][ 1 ], nv * 2 ) ) pq.emplace( nv * 2, nx, ny, 1 ); } } } void solve(){ cout << msg[ dp[ N - 1 ][ N - 1 ][ 0 ] >= 0 or dp[ N - 1 ][ N - 1 ][ 1 ] >= 0 ] << endl; } signed main(){ ios::sync_with_stdio( 0 ); init(); preprocess(); solve(); return 0; }