Trees vs Storm

Fani hit the Odisha coast at Puri. Alerted by the warnings, people had evacuated the area. However, two unfortunate binary search trees stood tall when the storm raged and rampaged onto the beach. Consequently, they became so weak that they would fall even in the slightest imbalance, i.e. the tree can stay upright if and only if both subtrees of the tree are of equal height. The trees will f