3115 . Cactus Matching

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User's AC Ratio

NaN% (0/0)

Submission's AC Ratio

NaN% (0/0)

Tags

NTU Preliminary NTU Preliminary 2019

Description

The PDF version of this problem can be downloaded here.

Input Format

Output Format

Sample Input 1

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

Sample Output 1

2

Hints

Problem Source

Migrated from old NTUJ.

Subtasks

No. Testdata Range Score

Testdata and Limits

No. Time Limit (ms) Memory Limit (VSS, KiB) Output Limit (KiB) Subtasks
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