343. Minimum Initial Energy to Finish Tasks

You are given an array tasks where tasks[i] = [actual_i, minimum_i]: - actual_i is the actual amount of energy you spend to finish the i-th task. - minimum_i is the minimum amount of energy you require to begin the i-th task. For example, if the task is [10, 12] and your current energy is 11, you cannot start this task. However, if your current energy is 13, you can complete this task, and your energy will be 3 after finishing it. You can finish the tasks in any order you like. Return the minimum initial amount of energy you will need to finish all the tasks.