CF285A.Slightly Decreasing Permutations
普及/提高-
通过率:0%
AC君温馨提醒
该题目为【codeforces】题库的题目,您提交的代码将被提交至codeforces进行远程评测,并由ACGO抓取测评结果后进行展示。由于远程测评的测评机由其他平台提供,我们无法保证该服务的稳定性,若提交后无反应,请等待一段时间后再进行重试。
题目描述
Permutation p is an ordered set of integers p1,p2,...,pn , consisting of n distinct positive integers, each of them doesn't exceed n . We'll denote the i -th element of permutation p as pi . We'll call number n the size or the length of permutation p1,p2,...,pn .
The decreasing coefficient of permutation p1,p2,...,pn is the number of such i\ (1<=i<n) , that p_{i}>p_{i+1} .
You have numbers n and k . Your task is to print the permutation of length n with decreasing coefficient k .
输入格式
The single line contains two space-separated integers: n,k\ (1<=n<=10^{5},0<=k<n) — the permutation length and the decreasing coefficient.
输出格式
In a single line print n space-separated integers: p1,p2,...,pn — the permutation of length n with decreasing coefficient k .
If there are several permutations that meet this condition, print any of them. It is guaranteed that the permutation with the sought parameters exists.
输入输出样例
输入#1
5 2
输出#1
1 5 2 4 3
输入#2
3 0
输出#2
1 2 3
输入#3
3 2
输出#3
3 2 1