#include using namespace std; typedef long long ll; typedef long double ld; typedef pair Pii; typedef pair Pil; typedef pair Pll; typedef pair Pli; typedef vector> Mat; #define fi first #define se second const ll MOD = 1e9 + 7; const ll MOD2 = 998244353; const ll MOD3 = 1812447359; const ll INF = 1ll << 62; const double PI = 2 * asin(1); void yes() { printf("yes\n"); } void no() { printf("no\n"); } void Yes() { printf("Yes\n"); } void No() { printf("No\n"); } void YES() { printf("YES\n"); } void NO() { printf("NO\n"); } int n, v, ox, oy, l[205][205]; const int di[4] = {-1, 0, 1, 0}, dj[4] = {0, -1, 0, 1}; bool visited[205][205][1005][2]; int main() { cin >> n >> v >> ox >> oy; for (int i = 1; i <= n; i++) { for (int j = 1; j <= n; j++) { cin >> l[i][j]; } } if (v - l[1][1] <= 0) { NO(); return 0; } queue> que; que.push({1, 1, v - l[1][1], 0}); visited[1][1][v - l[1][1]][0] = true; while (!que.empty()) { array q = que.front(); que.pop(); int i = q[0], j = q[1], val = q[2], cnt = q[3]; if (i == ox && j == oy && cnt == 0) { visited[i][j][val * 2][1] = true; que.push({i, j, val * 2, 1}); } for (int k = 0; k < 4; k++) { int next_i = i + di[k], next_j = j + dj[k], next_val = val - l[next_i][next_j]; if (1 <= next_i && next_i <= n && 1 <= next_j && next_j <= n && 1 <= next_val && !visited[next_i][next_j][next_val][cnt]) { que.push({next_i, next_j, next_val, cnt}); visited[next_i][next_j][next_val][cnt] = true; } } } for (int i = 1; i <= 1000; i++) { for (int j = 0; j <= 1; j++) { if (visited[n][n][i][j]) { YES(); return 0; } } } NO(); return 0; }