# Kth number

Time Limit: 15000/5000 MS (Java/Others)

Memory Limit: 32768/32768 K (Java/Others)

## Description

Give you a sequence and ask you the kth big number of a inteval.

## Input

The first line is the number of the test cases.
For each test case, the first line contain two integer n and m (n, m <= 100000), indicates the number of integers in the sequence and the number of the quaere.
The second line contains n integers, describe the sequence.
Each of following m lines contains three integers s, t, k.
[s, t] indicates the interval and k indicates the kth big number in interval [s, t]

## Output

For each test case, output m lines. Each line contains the kth big number.

## Sample Input

1
10 1
1 4 2 3 5 6 7 8 9 0
1 3 2 

## Sample Output

2

zty

## Source

HDU男生专场公开赛——赶在女生之前先过节（From WHU）