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SIMD12D.文本编辑器
文本编辑器
Statement
Maintain a lowercase text string under commands INS p s, DEL l r, REV l r, CUT l r p, and Q l1 r1 l2 r2.
Insertion is after the first characters. A cut first removes the substring , then inserts it after the first characters of the remaining string. A query asks whether the two current closed-interval substrings are exactly equal. All parameters are valid. The initial length plus the total length of inserted strings is at most .
Input
The first line is a nonempty initial string. The second line contains (). The next lines contain commands; every inserted string is nonempty, and the current length never exceeds .
Output
For every query, print YES if the two substrings are equal and NO otherwise.
Samples
Sample 1
Input:
abcde
8
Q 1 3 3 5
REV 2 4
INS 2 zz
Q 3 4 3 4
CUT 3 4 1
Q 1 2 6 7
DEL 2 3
Q 1 2 4 5
Output:
NO
YES
NO
NO
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