2130 . Hard Problem

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TopCoder

User's AC Ratio

NaN% (0/0)

Submission's AC Ratio

NaN% (0/0)

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Description

The PDF version of this problem can be downloaded here.

Input Format

Output Format

Sample Input 1

3
1 2
00
11
2 1
1
0
1
0
2 2
10
10
00
00

Sample Output 1

6.000000000
0.000000000
12.857142857

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.

Subtasks

No. Testdata Range Score

Testdata and Limits

No. Time Limit (ms) Memory Limit (VSS, KiB) Output Limit (KiB) Subtasks
0 5000 65536 200
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