#include <bits/stdc++.h>
using namespace std;
 
const int maxn = 1001;
typedef pair<int, int> ii;
const int dx[8] = {1, 2, 2, 1, -1, -2, -2, -1};
const int dy[8] = {2, 1, -1, -2, -2, -1, 1, 2};
 
int n, s, t, u, v;
int a[maxn][maxn];
int path[maxn][maxn];
 
void inp() {
    cin >> n >> s >> t >> u >> v;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= n; j++) {
            cin >> a[i][j];
            path[i][j] = INT_MAX; // Initialize path with large value
        }
    }
}
 
void BFS(int i, int j) {
    queue<ii> q;
    q.push({i, j});
    path[i][j] = 0; // Starting point
    while (!q.empty()) {
        ii p = q.front();
        q.pop();
        for (int k = 0; k < 8; k++) {
            int i1 = p.first + dx[k];
            int j1 = p.second + dy[k];
            if (i1 >= 1 && i1 <= n && j1 >= 1 && j1 <= n && a[i1][j1]) {
                q.push({i1, j1});
                path[i1][j1] = min(path[i1][j1], path[p.first][p.second] + 1);
                a[i1][j1] = 0; // Mark visited cell
            }
        }
    }
}
 
int main() {
    inp();
    BFS(s, t);
    if (path[u][v] == INT_MAX) {
        cout << "-1\n";
    } else {
        cout << path[u][v] << endl;
    }
    return 0;
}
 

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10
6 7 8 9
0 1 1 0 1 0 1 0 1 0
1 1 0 0 1 1 0 0 1 0
1 1 0 1 1 0 0 1 0 0
0 1 1 1 1 1 1 1 1 0
0 0 1 0 0 1 1 1 1 1
1 1 0 1 1 0 1 0 0 0
1 0 0 0 0 1 1 0 1 1
1 1 1 1 1 1 1 0 1 1
1 0 0 1 1 1 0 1 1 1
1 0 0 1 1 0 0 1 0 1