Bubble Sort

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You are given arrays a1,a2,…,an. What will return the next function Bubble Sort (A) in the next picture.

Link to the image: https://ibb.co/vzFR5kr
Input format
  • The first line contains the integer N (1⩽N⩽5000) denoting the number of elements of array A.
  • The second line contains N positive integers (1⩽Ai⩽N) denoting the elements of the array.
    Note: It is guaranteed that all elements of array A are different.
Output format
Print an integer that denotes the answer to the question.
SAMPLE INPUT
5
1 3 2 5 4
SAMPLE OUTPUT
2

Explanation
Answer is 2 (to verify this, you can simply implement this procedure)

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