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class Solution {
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  public int projectionArea(int[][] grid) {
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    int totalArea = 0;
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    for (int[] row : grid) {
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      int max = row[0];
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      for (int c : row) {
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        if (max < c) {
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          max = c;
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        }
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        if (c != 0) {
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          totalArea += 1;
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        }
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      }
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      totalArea += max;
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    }
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    for (int c = 0; c < grid[0].length; c++) {
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      int max = grid[0][c];
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      for (int row = 0; row < grid.length; row++) {
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        if (max < grid[row][c]) {
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          max = grid[row][c];
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        }
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      }
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      totalArea += max;
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    }
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    return totalArea;
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  }
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}