LeetCode Problem 636

Given n logs of a function with a unique ID. Each log with the format 'function_id:start_or_end:timestamp' indicates a function starts or ends at a particular time. No two functions overlap. Your task is to return an array of exclusive time of execution for each function. Note that a 1-second time interval implies that a function can end and another can start at the same time. Example Input 2 0:start:0 1:start:2 1:end:5 0:end:6