CF1833E.Round Dance

传统题 时间 2000 ms 内存 256 MiB 8 尝试 3 已通过 1 标签

Round Dance

nn people came to the festival and decided to dance a few round dances. There are at least 22 people in the round dance and each person has exactly two neighbors. If there are 22 people in the round dance then they have the same neighbor on each side.

You decided to find out exactly how many dances there were. But each participant of the holiday remembered exactly one neighbor. Your task is to determine what the minimum and maximum number of round dances could be.

For example, if there were 66 people at the holiday, and the numbers of the neighbors they remembered are equal [2,1,4,3,6,5][2, 1, 4, 3, 6, 5], then the minimum number of round dances is11:

  • 12345611 - 2 - 3 - 4 - 5 - 6 - 1

and the maximum is 33:

  • 1211 - 2 - 1
  • 3433 - 4 - 3
  • 5655 - 6 - 5

Input

The first line contains a positive number tt (1t1041 \le t \le 10^4) — the number of test cases. The following is a description of the test cases.

The first line of the description of each test case contains a positive number nn (2n21052 \le n \le 2 \cdot 10^5) — the number of people at the holiday.

The second line of the description of each test case contains nn integers aia_i (1ain,aii1 \le a_i \le n, a_i \neq i) — the number of the neighbor that the iith person remembered.

It is guaranteed that the test cases are correct and corresponds to at least one division of people into round dances.

It is guaranteed that the sum of nn for all test cases does not exceed 21052 \cdot 10^5.

Output

For each test case, output two integers — the minimum and maximum number of round dances that could be.

Samples

10
6
2 1 4 3 6 5
6
2 3 1 5 6 4
9
2 3 2 5 6 5 8 9 8
2
2 1
4
4 3 2 1
5
2 3 4 5 1
6
5 3 4 1 1 2
5
3 5 4 1 2
6
6 3 2 5 4 3
6
5 1 4 3 4 2
1 3
2 2
1 3
1 1
1 2
1 1
1 1
2 2
1 2
1 1

在线编程 IDE

建议全屏模式获得最佳体验