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User's AC Ratio

NaN% (0/0)

Submission's AC Ratio

NaN% (0/0)

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Description

A printable version(PDF) can be downloaded here.

This problem is not special judge ORIGIONALLY.

Input Format

Output Format

Hints

Info: 本題輸出為浮點數，絕對或相對誤差 1e-5 以下視為正確

Problem Source

Migrated from old NTUJ.

Codeforces 2C

Subtasks

No.	Testdata Range	Score

Testdata and Limits

No.	Time Limit (ms)	Memory Limit (VSS, KiB)	Output Limit (KiB)	Subtasks
0	1000	65536	200

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