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

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]

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

2