public class HourGlass {

  /*
   * 1 1 1 0 0 0
   * 0 1 0 0 0 0
   * 1 1 1 0 0 0
   * 0 0 0 0 0 0
   * 0 0 0 0 0 0
   * 0 0 0 0 0 0
   */

  public static void main(String[] args) {

    int[][] ar = { { 1, 1, 1, 0, 0, 0 }, { 0, 1, 0, 0, 0, 0 }, { 1, 1, 1, 0, 0, 0 }, { 0, 0, 2, 4, 4, 0 },
        { 0, 0, 0, 2, 0, 0 }, { 0, 0, 1, 2, 4, 0 } };
    System.out.println(sumInt(ar));
  }

  private static int sumInt(int[][] arr) {
    int rows = arr.length;
    int columns = arr[0].length;

    int total = -63;
    for (int i = 0; i < rows - 2; i++) {
      for (int j = 0; j < columns - 2; j++) {
        int currentSum = arr[i][j] + arr[i][j + 1] + arr[i][j + 2] + arr[i + 1][j + 1] + arr[i + 2][j]
            + arr[i + 2][j + 1] + arr[i + 2][j + 2];
        total = Math.max(total, currentSum);
      }
    }
    return total;
  }

}