CF755F.PolandBall and Gifts
普及/提高-
通过率:0%
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题目描述
It's Christmas time! PolandBall and his friends will be giving themselves gifts. There are n Balls overall. Each Ball has someone for whom he should bring a present according to some permutation p , pi=i for all i .
Unfortunately, Balls are quite clumsy. We know earlier that exactly k of them will forget to bring their gift. A Ball number i will get his present if the following two constraints will hold:
- Ball number i will bring the present he should give.
- Ball x such that px=i will bring his present.
What is minimum and maximum possible number of kids who will not get their present if exactly k Balls will forget theirs?
输入格式
The first line of input contains two integers n and k ( 2<=n<=106 , 0<=k<=n ), representing the number of Balls and the number of Balls who will forget to bring their presents.
The second line contains the permutation p of integers from 1 to n , where pi is the index of Ball who should get a gift from the i -th Ball. For all i , pi=i holds.
输出格式
You should output two values — minimum and maximum possible number of Balls who will not get their presents, in that order.
输入输出样例
输入#1
5 2 3 4 1 5 2
输出#1
2 4
输入#2
10 1 2 3 4 5 6 7 8 9 10 1
输出#2
2 2
说明/提示
In the first sample, if the third and the first balls will forget to bring their presents, they will be th only balls not getting a present. Thus the minimum answer is 2 . However, if the first ans the second balls will forget to bring their presents, then only the fifth ball will get a present. So, the maximum answer is 4 .