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Solution: Exclusive Time of Functions

Explore how to compute the exclusive execution time of functions running in a single-threaded CPU by analyzing start and end logs. Understand the application of stacks to manage function calls, preemptions, and resumptions, and learn to implement this approach efficiently in C++.

Statement

We are given an integer number, n, representing the number of functions running in a single-threaded CPU, and an execution log, which is essentially a list of strings. Each string has the format {function id}:{"start" | "end"}:{timestamp}, indicating that the function with function id either started or stopped execution at the time identified by the timestamp value. Each function has a unique ID between 00 and n1n-1 ...