static void Main()
{
StreamReader reader = new StreamReader(@"..\..\date.in");
int x, y, xdest, ydest;
int[,] a;
#region read
string[] tokens = reader.ReadLine().Split(' ');
x = int.Parse(tokens[0]);
y = int.Parse(tokens[1]);
tokens = reader.ReadLine().Split(' ');
xdest = int.Parse(tokens[0]);
ydest = int.Parse(tokens[1]);
CitireMatrice(out a, reader);
n = a.GetLength(0);
m = a.GetLength(1);
#endregion
//back
pozitie[] st = new pozitie[n * m];
int k = 0;
bool[,] b = new bool[n, m];
st[0].lin = x;
st[0].col = y;
b[x, y] = true;
Afisare(a);
bk(a, b, st, xdest, ydest, k, st[0]);
return;
}
static void bk(int[,] a, bool[,] b, pozitie[] st, int lindest, int coldest, int k, pozitie reper)
{
if (st[k].lin == lindest && st[k].col == coldest)
{
for (int i = 0; i <= k; i++)
{
Console.WriteLine(st[i] + "\t");
}
Console.WriteLine("==============");
Console.ReadKey();
}
else
{
for (int i = 0; i < dx.Length; i++)
{
pozitie nou;
nou.lin = reper.lin + dx[i];
nou.col = reper.col + dy[i];
if (nou.lin >= 0 && nou.col >= 0 && nou.lin < n && nou.col < m &&
a[nou.lin, nou.col] != 1 && !b[nou.lin, nou.col])
{
st[k + 1] = nou;
b[nou.lin, nou.col] = true;
bk(a, b, st, lindest, coldest, k + 1, nou);
b[nou.lin, nou.col] = false;
}
}
}
}
