static void Main(string[] args)
{
string firstLine = Console.ReadLine();
string[] dim = firstLine.Split(' ');
int width = int.Parse(dim[0]);
int height = int.Parse(dim[1]);
int depth = int.Parse(dim[2]);
int[,,] cube = new int[width, height, depth];
bool[, ,] visited = new bool[width, height, depth];
for (int j = 0; j < height; ++j)
{
string line = Console.ReadLine();
string[] depthSequence = line.Split(new string[] {" | "}, StringSplitOptions.None);
for (int k = 0; k < depth; ++k)
{
string[] widthSquence = depthSequence[k].Split(' ');
for (int i = 0; i < width; ++i)
{
cube[i, j, k] = int.Parse(widthSquence[i]);
}
}
}
int[] deltaX = {1, -1, 0, 0, 0, 0};
int[] deltaY = {0, 0, 1, -1, 0, 0};
int[] deltaZ = {0, 0, 0, 0, 1, -1};
Position currentPosition = new Position(width >> 1, height >> 1, depth >> 1);
Position nextPosition;
int result = cube[currentPosition.x, currentPosition.y, currentPosition.z];
while (true)
{
visited[currentPosition.x, currentPosition.y, currentPosition.z] = true;
int tmpMaxvalue = int.MinValue;
int countSameValue = 0;
Position nextMove = new Position(currentPosition.x, currentPosition.y, currentPosition.z);
for (int i = 0; i < 6; ++i)
{
nextPosition = new Position(currentPosition.x + deltaX[i],
currentPosition.y + deltaY[i],
currentPosition.z + deltaZ[i]);
while (Valid(nextPosition, width, height, depth))
{
if (tmpMaxvalue == cube[nextPosition.x, nextPosition.y, nextPosition.z])
{
countSameValue++;
}
else if (tmpMaxvalue < cube[nextPosition.x, nextPosition.y, nextPosition.z])
{
countSameValue = 1;
nextMove = nextPosition;
tmpMaxvalue = cube[nextPosition.x, nextPosition.y, nextPosition.z];
}
nextPosition = new Position(nextPosition.x + deltaX[i],
nextPosition.y + deltaY[i],
nextPosition.z + deltaZ[i]);
}
}
if (countSameValue == 1)
{
if (!visited[nextMove.x, nextMove.y, nextMove.z])
{
result += tmpMaxvalue;
currentPosition = nextMove;
}
else
{
break;
}
}
else
{
break;
}
}
Console.WriteLine(result);
}
static bool Valid(Position position, int width, int height, int depth)
{
return (position.x >= 0 && position.x < width &&
position.y >= 0 && position.y < height &&
position.z >= 0 && position.z < depth);
}