Introduction Problem description and (if any) e of the algorithms. Description: Use i to represent the interval with coordinate (i- 1, i) and length 1 on the X coordinate axis, and give n (1-n-200) as different integers to represent n such intervals. Now it is required to draw m line segments to cover all sections, provided that each line segment can be arbitrarily long, but the sum of the line lengths is required to be the smallest, and the number of line segments does not exceed m (1-m-50). (用i来表示X坐标轴上坐标为(i-1,i)、长度为1 的区间,并给出n(1,n=200)个不同的整数,表 示n个这样的区间。现在要求画m条线段覆盖 住所有的区间,条件是每条线段可以任意 长,但是要求所画的长度之和最小,并且线 Tm(1-m-50). ) Input: the input includes multiple groups of data. The first row of each group of data represents the number of intervals n and the number of required line segments m, and the second row represents the coordinates of n points. (输入包括多组数据,每组数据的第1行表示 区间个数n和所需线段数m,第2行表示n个点 的坐标。) Output: each group of output occupies one line, and the minimum length sum of m line segments are outnut Sample Input: 53 138511 Sample Output 7 2: Algorithm Specification Description (pseudo-code preferred) of all the algorithms involved for solving the problem, including specifications of main data structures. 3: Testing Results Table of test cases. Each test case usually consists of a brief description of the purpose of this case, the expected result, the actual behavior of your program, the possible cause of a bug if your program does not function as expected, and the current status ("pass", or "corrected", or "pending"). 4: Analysis and Comments Analysis of the time and space complexities of the algorithms. Comments on further possible improvements. Time complexities: O(n)