#include <iostream>
#include <vector>
#include <tuple>
#include <queue>

template <class T>
std::vector<T> vec(int len, T elem) { return std::vector<T>(len, elem); }

template <class T>
using MaxHeap = std::priority_queue<T>;

const std::vector<std::pair<int, int>>
    dxys{{0, 1}, {0, -1}, {1, 0}, {-1, 0}};

void solve() {
    int n, m, ox, oy;
    std::cin >> n >> m >> ox >> oy;
    --ox, --oy;

    auto xss = vec(n, vec(n, 0));
    for (auto& xs : xss) {
        for (auto& x : xs) std::cin >> x;
    }

    auto dp = vec(n, vec(n, 0));
    dp[0][0] = m;
    MaxHeap<std::tuple<int, int, int>> heap;
    heap.emplace(dp[0][0], 0, 0);

    while (!heap.empty()) {
        auto [d, x, y] = heap.top();
        heap.pop();
        if (d < dp[x][y]) continue;

        if (x == ox && y == oy) dp[x][y] *= 2;

        for (auto [dx, dy] : dxys) {
            int nx = x + dx,
                ny = y + dy;
            if (nx < 0 || n <= nx ||
                ny < 0 || n <= ny ||
                dp[nx][ny] >= dp[x][y] - xss[nx][ny]) continue;

            dp[nx][ny] = dp[x][y] - xss[nx][ny];
            heap.emplace(dp[nx][ny], nx, ny);
        }
    }

    std::cout << (dp[n - 1][n - 1] == 0 ? "NO" : "YES") << "\n";
}

int main() {
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    solve();

    return 0;
}