- Time limit: 1.00 s
- Memory limit: 512 MB
Given a string, your task is to process operations where you cut a substring and paste it to the end of the string. What is the final string after all the operations?
The first input line has two integers n and m: the length of the string and the number of operations. The characters of the string are numbered 1,2,\dots,n.
The next line has a string of length n that consists of characters A–Z.
Finally, there are m lines that describe the operations. Each line has two integers a and b: you cut a substring from position a to position b.
Print the final string after all the operations.
- 1 \le n, m \le 2 \cdot 10^5
- 1 \le a \le b \le n
7 2 AYBABTU 3 5 3 5