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Solution: Exclusive Time of Functions

Explore how to calculate the exclusive time of functions from CPU execution logs using a stack. Understand how to handle start and end timestamps and nested function calls to accurately compute execution durations with efficient time and space complexity.

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 ...