#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]; int ans[205][205]; 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]; } } priority_queue> que; que.push({v, {1, 1}}); while (!que.empty()) { pair q = que.top(); que.pop(); int now = q.first, i = q.second.first, j = q.second.second; if (visited[i][j]) { continue; } visited[i][j] = true; ans[i][j] = now; for (int k = 0; k < 4; k++) { int next_i = i + di[k], next_j = j + dj[k]; if (1 <= next_i && next_i <= n && 1 <= next_j && next_j <= n && !visited[next_i][next_j] && now > l[next_i][next_j]) { if (ox == next_i && oy == next_j) { que.push({(now - l[next_i][next_j]) * 2, {next_i, next_j}}); } else { que.push({now - l[next_i][next_j], {next_i, next_j}}); } } } } visited[n][n] ? YES() : NO(); return 0; }