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User's AC Ratio

NaN% (0/0)

Submission's AC Ratio

NaN% (0/0)

Tags

NTU Preliminary NTU Preliminary 2016

Description

The PDF version of this problem can be downloaded here.

Input Format

Output Format

Sample Input 1

1
7 7
ABCACBA
1 2
1 3
2 4
2 5
3 6
5 7
ABEBACA
1 2
1 3
2 4
2 5
5 6
6 7

Sample Output 1

Hints

Problem Source

Migrated from old NTUJ.

hh

Subtasks

No.	Testdata Range	Score

Testdata and Limits

No.	Time Limit (ms)	Memory Limit (VSS, KiB)	Output Limit (KiB)	Subtasks
0	1000	65536	131072

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