A Simple Task

题意翻译

题目大意: 给定一个长度不超过10^5的字符串(小写英文字母),和不超过50000个操作。 每个操作 L R K 表示给区间[L,R]的字符串排序,K=1为升序,K=0为降序。 最后输出最终的字符串。

题目描述

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.

输入输出格式

输入格式


The first line will contain two integers $ n,q $ ( $ 1<=n<=10^{5} $ , $ 0<=q<=50000 $ ), 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 $ , ![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF558E/7c3e064c95015e1bd5569e78df83991726b5fb24.png)).

输出格式


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

输入输出样例

输入样例 #1

10 5
abacdabcda
7 10 0
5 8 1
1 4 0
3 6 0
7 10 1

输出样例 #1

cbcaaaabdd

输入样例 #2

10 1
agjucbvdfk
1 10 1

输出样例 #2

abcdfgjkuv

说明

First sample test explanation: ![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF558E/39812d297b72578842edac4711612bcaf8f08f55.png) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF558E/6cf00260e704a305c81e1f57b87405efa2610fa7.png) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF558E/8d72452272093b12cc5f5081cf07220bba9298d5.png) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF558E/51ddb7e0620c1f3452d956f281c3537d11d07fb3.png) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF558E/47cfdfe8b8cb10e651ce3dbdd53d8f068aca3e79.png)