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User's AC Ratio

NaN% (0/0)

Submission's AC Ratio

NaN% (0/0)

Tags

NTU Preliminary NTU Preliminary 2014

Description

The PDF version of this problem can be downloaded here.

Input Format

Output Format

Sample Input 1

2
1 1 0.500
1 2 0.750

Sample Output 1

3.000000000
6.666666667

Hints

Info: 本題輸出為浮點數，絕對或相對誤差 1e-6 以下視為正確

Problem Source

Migrated from old NTUJ.

TwT514

Subtasks

No.	Testdata Range	Score

Testdata and Limits

No.	Time Limit (ms)	Memory Limit (VSS, KiB)	Output Limit (KiB)	Subtasks
0	1000	65536	20000

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