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India celebrates her Republic day on 26th January every year. It is celebrated in every colleges and schools.
While preparing for the celebration in BIT-Deoghar, Lemon Kumar, a student in-charge of the Republic day event, went to buy sweet packets.
In the shop n packets are kept in a tray, numbered from 1 to n and having Ci(1 ≤ i ≤ n) cost. The shopkeeper gave him a republic day special offer to select any number of contiguous packets out of n packets from any where in the tray but he will charge Rs. X per packet.
Find the maximum overall profit he can get from this offer as he is free to buy any number of packets.
First Line contains number of test cases T.
Each test case contains two lines, first line contains two space separated integers n and X.
Second line contains n space separated integers, Ci(1 ≤ i ≤ n) .
Print the required result in new line.
- 1 ≤ T ≤ 1000
- 1 ≤ n ≤ 105
- 1 ≤ Ci ≤ 109
- 1 ≤ X ≤ 109
Input: 1 3 5 1 5 7 Output: 2
Case 1: Either 3rd or both 2nd and 3rd packet(s) can be selected to make a profit of 2.
|Time Limit:||1 sec|
|Source Limit:||50000 Bytes|
|Languages:||C, CPP14, JAVA, PYTH, PYTH 3.6, PYPY, CS2, PAS fpc, PAS gpc, RUBY, PHP, GO, NODEJS, HASK, SCALA, D, PERL, FORT, WSPC, ADA, CAML, ICK, BF, ASM, CLPS, PRLG, ICON, SCM qobi, PIKE, ST, NICE, LUA, BASH, NEM, LISP sbcl, LISP clisp, SCM guile, JS, ERL, TCL, PERL6, TEXT, SCM chicken, CLOJ, FS|
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