TopCoder

User's AC Ratio

NaN% (0/0)

Submission's AC Ratio

NaN% (0/0)

Tags

Description

Input Format

Output Format

Sample Input 1

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

Sample Output 1

4

Hints

Problem Source

Migrated from old NTUJ.

POI 17th

Subtasks

No. Testdata Range Score

Testdata and Limits

No. Time Limit (ms) Memory Limit (VSS, KiB) Output Limit (KiB) Subtasks
0 10000 65536 200