撒浪嘿呦✨的博客

Best Cow LineDescriptionFJ is about to take his N (1 ≤ N ≤ 2,000) cows to the annual “Farmer of the Year” competition. In this contest every farmer arranges his cows in a line and herds them past the judges.The contest organizers adopted a new registrat

火星人一.库函数: next_permutation ( start , end )功能：将一个数字数数组{1，2，3，4，5}，从start位到end位进行全排列，返回下一个（从小到大排序）的数组。eg:a[ ] = {1，2，3，4，5}next_permutation ( a , a+5 ) >>>{1，2，3，5，4}next_permutation ( a , a+5 ) >>>{1，2，4，3，5}#include&