994 . Exclusive Access 2
Description
please see pdf file linked from contest page.
Warn: 本題有 specialjudge
Input Format
Output Format
Sample Input 1
2 P Q R S 6 P Q Q R R S S T T U U P 4 P Q P Q P Q P Q 3 P Q Q R R P 6 P Q Q S S R R P P S R Q
Sample Output 1
0 P Q R S 0 P Q R Q R S T S T U P U 0 P Q P Q P Q P Q 1 P Q Q R P R 2 P Q Q S R S P R P S R Q
Hints
Problem Source
Migrated from old NTUJ.
NEERC 2009
Subtasks
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