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User's AC Ratio

NaN% (0/0)

Submission's AC Ratio

NaN% (0/0)

Tags

NTU Team Ranking NTU Team Ranking 2013

Description

The PDF version of this problem can be downloaded here.

Input Format

Output Format

Sample Input 1

2
5 5
1 3 2 4
1 2 1
2 3 2
3 4 4
2 5 3
5 4 2
4 0
1 2 3 4

Sample Output 1

7
impossible

Hints

Problem Source

Migrated from old NTUJ.

2013 NTU Team Ranking Contest

Subtasks

No. Testdata Range Score

Testdata and Limits

No. Time Limit (ms) Memory Limit (VSS, KiB) Output Limit (KiB) Subtasks
0 2000 65536 200
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