2 4 3 0 1 A 1 2 A 2 3 A 2 0 3 2 0 5 4 1 2 B 2 3 D 2 4 A 2 0 B 2 1 3 1 0
Case 1: 1.000000 0.000000 Case 2: 0.000000 0.333333
Info: 本題輸出為浮點數，絕對或相對誤差 1e-4 以下視為正確
Migrated from old NTUJ.
ACM-ICPC Asia Phuket Regional Programming Contest 2013
| No. | Testdata Range | Score |
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