2027 . Never Wait for Weights

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User's AC Ratio

NaN% (0/0)

Submission's AC Ratio

NaN% (0/0)

Tags

ICPC Tokyo 2012

Description

The PDF version of this problemset can be downloaded here.

Input Format

Output Format

Sample Input 1

2 2
! 1 2 1
? 1 2
2 2
! 1 2 1
? 2 1
4 7
! 1 2 100
? 2 3
! 2 3 100
? 2 3
? 1 3
! 4 3 150
? 4 1
0 0

Sample Output 1

1
-1
UNKNOWN
100
200
-50

Hints

Problem Source

Migrated from old NTUJ.

ACM-ICPC Japan 2012

Subtasks

No. Testdata Range Score

Testdata and Limits

No. Time Limit (ms) Memory Limit (VSS, KiB) Output Limit (KiB) Subtasks
0 10000 65536 20000
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