The interviewer asked some resume based questions as warm up exercise.
And then he asked only one question to me which is:
Given an n-ary tree, and water starts dropping on the root node of the tree. It starts from the root node and spreads evenly to the child nodes in a fixed amount of time which is given by the weight of the edge connecting the parent node and the child node. You have to find the minimum time in which the complete tree will get wet, that is, all nodes are wet.
The edge weights are given in question for each connecting edge of the tree.