Problem5174--快速的排序(quicksort)

5174: 快速的排序(quicksort)

Time Limit: 15.000 Sec  Memory Limit: 512 MB
Submit: 4  Solved: 2
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Description


Output

输出一个字符串，表示最后的结果。

Sample Input

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

Sample Output

cbcaaaabdd

HINT


Source/Category

 

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