Test Case Confusion
\nFor this test case - [[12,13,1,12],[13,4,13,12],[13,8,10,12],[12,13,12,12],[13,13,13,13]],\n\n[\n [12,13,1,12],\n [13,4,13,12], \n [13,8,10,12],\n [12,13,12,1
```\nFor this test case - [[12,13,1,12],[13,4,13,12],[13,8,10,12],[12,13,12,12],[13,13,13,13]],\n\n[\n [12,13,1,12],\n [13,4,13,12], \n [13,8,10,12],\n [12,13,12,12],\n [13,13,13,13]\n ]\n \n the volume stored should be - 9 + 4 + 2 = 15. But the expected answer is 14? \n \n At 1, 1 -> 9\n At 2,1 -> 4\n At 2,2 -> 2\n```
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