D. The Union of k-Segments You re given n segments on the coordinate axis Ox and the number k. The point is satisfied if it belongs to at least k segments. Find the smallest (by the number of segments) set of segments on the coordinate axis Ox whic
using System; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Text; using System.Threading; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { //定义一个二维list,用来代替二维数组,这样每行的个数就可以