Trees: Is This a Binary Search Tree?

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    I figured it out. I was passing min=-1 and max=10^4+1 into the function given that the range of values in the tree were supposed to be between 0 and 10^4 as was stated. Apparently, there must be some values in the trees in some of the testcases that lie outside the specified range, because when I switched to min=INT_MIN and max=INT_MAX (from ), all test cases solved upon 'submit'.