Course Schedule

There are a total of `numCourses` courses you have to take, labeled from `0` to `numCourses - 1`. You are given an array `prerequisites` where `prerequisites[i] = [a_i, b_i]` indicates that you must take course `b_i` first if you want to take course `a_i`. For example, the pair `[0, 1]`, indicates that to take course `0` you have to first take course `1`. Return `true` if you can finish all courses. Otherwise, return `false`. ### Constraints - `1 <= numCourses <= 2000` - `0 <= prerequisites.length <= 5000` - `prerequisites[i].length == 2` - `0 <= a_i, b_i < numCourses` - All the pairs `prerequisites[i]` are unique. ### Input Format - Line 1: Two space-separated integers `numCourses` and `m` (number of prerequisites). - Next `m` lines: Two space-separated integers `a b`. ### Output Format Print `true` or `false`.