" Bruce Wayne: I do fear death. I fear dying in here while my city burns.
 Blind Prisoner: Then make the climb.
 Bruce Wayne: How?
 Blind Prisoner: As the child did. Without the rope. Then fear will find you again. "

The Epic fight between BANE and BATMAN saw BATMAN on the losing side .Bane delivers a crippling blow to Batman's back, then takes him to a foreign, well-like prison where escape is virtually impossible .

The prison as we know is a place from where no man ever escaped , except for the child of Ra's al Ghul himself . 

The heroics of BATMAN saw him escape the prison , however after the prison came the Valleys . To reach the city , He needed to cross these valleys . Meanwhile , BANE's army has surrounded the city and trapped all the policemen underground . Each of these peaks contain exactly one policeman held captive by Bane's men. Since, BATMAN needs to build his own army , he decides to free some of the policemen on his way . 

Also BATMAN needed to save his energy before his battle with Bane ,so he decided to take only downhill (strictly) jumps .Detective John Blake ( now called as ROBIN ) is standing in one of these peaks with a mini-BAT . This will allow BATMAN to take a maximum one jump uphill ahead . BATMAN can choose to flee ROBIN and use the BAT or rather cross over without his help .

The task in hand is to maximize the army strength to face BANE as BATMAN crosses over.
(BATMAN can take his first jump on any of these peaks)

" Bane : So, you came back to die with your city. 
   Batman : No. I came back to stop you. " 

Input

t , number of testcases
n : number of peaks ,  m : (zero based)index of the peak where ROBIN is standing
n intergers denoting the height of the peaks   

Output

The maximum strength of the army

Constraints :

1<=n<=1000

Example

Input:
1
6 4
6 3 5 2 4 5
Output:

4