Package for this problem was not updated by the problem writer or Codeforces administration after we’ve upgraded the judging servers. To adjust the time limit constraint, solution execution time will be multiplied by 2. For example, if your solution works for 400 ms on judging servers, then value 800 ms will be displayed and used to determine the verdict.

Virtual contest is a way to take part in past contest, as close as possible to participation on time. It is supported only ICPC mode for virtual contests.
If you've seen these problems, a virtual contest is not for you - solve these problems in the archive.
If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive.
Never use someone else's code, read the tutorials or communicate with other person during a virtual contest.

No tag edit access

The problem statement has recently been changed. View the changes.

×
C. Median

time limit per test

2 secondsmemory limit per test

256 megabytesinput

standard inputoutput

standard outputA median in an array with the length of *n* is an element which occupies position number after we sort the elements in the non-decreasing order (the array elements are numbered starting with 1). A median of an array (2, 6, 1, 2, 3) is the number 2, and a median of array (0, 96, 17, 23) — the number 17.

We define an expression as the integer part of dividing number *a* by number *b*.

One day Vasya showed Petya an array consisting of *n* integers and suggested finding the array's median. Petya didn't even look at the array and said that it equals *x*. Petya is a very honest boy, so he decided to add several numbers to the given array so that the median of the resulting array would be equal to *x*.

Petya can add any integers from 1 to 10^{5} to the array, including the same numbers. Of course, he can add nothing to the array. If a number is added multiple times, then we should consider it the number of times it occurs. It is not allowed to delete of change initial numbers of the array.

While Petya is busy distracting Vasya, your task is to find the minimum number of elements he will need.

Input

The first input line contains two space-separated integers *n* and *x* (1 ≤ *n* ≤ 500, 1 ≤ *x* ≤ 10^{5}) — the initial array's length and the required median's value. The second line contains *n* space-separated numbers — the initial array. The elements of the array are integers from 1 to 10^{5}. The array elements are not necessarily different.

Output

Print the only integer — the minimum number of elements Petya needs to add to the array so that its median equals *x*.

Examples

Input

3 10

10 20 30

Output

1

Input

3 4

1 2 3

Output

4

Note

In the first sample we can add number 9 to array (10, 20, 30). The resulting array (9, 10, 20, 30) will have a median in position , that is, 10.

In the second sample you should add numbers 4, 5, 5, 5. The resulting array has median equal to 4.

Codeforces (c) Copyright 2010-2021 Mike Mirzayanov

The only programming contests Web 2.0 platform

Server time: May/12/2021 04:45:43 (g1).

Desktop version, switch to mobile version.

Supported by

User lists

Name |
---|