Have lunch with the hiring manager and talk to five people on the panel, one at a time. The questions are not ideal for testing an experienced candidate. They judge you by specific questions without appreciating the candidate's working experience.

1. Given an array of n integers. Derive an array where the value of the element at index i is the product of elements in the given array except for element i. The complexity should be O(n).

2. How to traverse a timing graph starting from the input nodes? The data structure of the nodes in the graph is given. Write a C program for it.

3. Implement a C++ hashing function.