题目描述

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

输入格式

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 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]

输出格式

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

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

2