<p>An <code>n x n</code> grid is composed of <code>1 x 1</code> squares where each <code>1 x 1</code> square consists of a <code>&#39;/&#39;</code>, <code>&#39;\&#39;</code>, or blank space <code>&#39; &#39;</code>. These characters divide the square into contiguous regions.</p>

<p>Given the grid <code>grid</code> represented as a string array, return <em>the number of regions</em>.</p>

<p>Note that backslash characters are escaped, so a <code>&#39;\&#39;</code> is represented as <code>&#39;\\&#39;</code>.</p>

<p>&nbsp;</p>
<p><strong class="example">Example 1:</strong></p>
<img alt="" src="https://assets.leetcode.com/uploads/2018/12/15/1.png" style="width: 200px; height: 200px;" />
<pre>
<strong>Input:</strong> grid = [&quot; /&quot;,&quot;/ &quot;]
<strong>Output:</strong> 2
</pre>

<p><strong class="example">Example 2:</strong></p>
<img alt="" src="https://assets.leetcode.com/uploads/2018/12/15/2.png" style="width: 200px; height: 198px;" />
<pre>
<strong>Input:</strong> grid = [&quot; /&quot;,&quot;  &quot;]
<strong>Output:</strong> 1
</pre>

<p><strong class="example">Example 3:</strong></p>
<img alt="" src="https://assets.leetcode.com/uploads/2018/12/15/4.png" style="width: 200px; height: 200px;" />
<pre>
<strong>Input:</strong> grid = [&quot;/\\&quot;,&quot;\\/&quot;]
<strong>Output:</strong> 5
<strong>Explanation: </strong>Recall that because \ characters are escaped, &quot;\\/&quot; refers to \/, and &quot;/\\&quot; refers to /\.
</pre>

<p>&nbsp;</p>
<p><strong>Constraints:</strong></p>

<ul>
	<li><code>n == grid.length == grid[i].length</code></li>
	<li><code>1 &lt;= n &lt;= 30</code></li>
	<li><code>grid[i][j]</code> is either <code>&#39;/&#39;</code>, <code>&#39;\&#39;</code>, or <code>&#39; &#39;</code>.</li>
</ul>

class Solution:
    def __init__(self):
        self.my_grid = []

    def floodfill(self, grid, r, c, color):
        # Check for out-of-bounds or already colored cells
        if r < 0 or r >= len(grid) or c < 0 or c >= len(grid[0]) or grid[r][c] != 0:
            return
        
        # Color the cell
        grid[r][c] = color
        
        # Flood fill in all four directions
        self.floodfill(grid, r - 1, c, color)
        self.floodfill(grid, r + 1, c, color)
        self.floodfill(grid, r, c - 1, color)
        self.floodfill(grid, r, c + 1, color)

    def regionsBySlashes(self, grid: List[str]) -> int:
        #variables
        n = len(grid)
        max_color = 0

        #convert strings to grid with -1,0
        self.my_grid = [[0 for i in range(n*3)] for j in range(n*3)]
        print(self.my_grid)
        for i in range(n):
            for j in range(n):
                if grid[i][j]=="/":
                    self.my_grid[i*3+0][j*3+2] = -1
                    self.my_grid[i*3+1][j*3+1] = -1
                    self.my_grid[i*3+2][j*3+0] = -1
                elif grid[i][j]=="\\":
                    self.my_grid[i*3+0][j*3+0] = -1
                    self.my_grid[i*3+1][j*3+1] = -1
                    self.my_grid[i*3+2][j*3+2] = -1
                    
        print(self.my_grid)

        #apply flood fill with m as color till entire grid is not colored
        for i in range(n*3):
            for j in range(n*3):
                if self.my_grid[i][j]==0:
                    max_color += 1
                    self.floodfill(self.my_grid, i, j, max_color)
                

        return max_color

        
        
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