This task is very simple. Given a string S of length n and q queries each query is on the format i j k which means sort the substring consisting of the characters from i to j in non-decreasing order if k = 1 or in non-increasing order if k = 0. Output the final string after applying the queries.

输入描述:

The first line will contain two integers n, q (1 ≤ n ≤ 105, 0 ≤ q ≤ 50 000), the length of the string and the number of queries respectively. Next line contains a string S itself. It contains only lowercase English letters.Next q lines will contain three integers each i, j, k (1 ≤ i ≤ j ≤ n, ).

输出描述:

Output one line, the string S after applying the queries.

备注:

First sample test explanation: