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Multiple input terminated by EOF.
1 0 0 10 10 10 3 5 5 0 0 1 0 0 2 3 3 2 3 30 10 25 15 10 50 15 10 52 17 2
10.0 7.242640687 21.378378914
Info: 本題輸出為浮點數，絕對或相對誤差 1e-6 以下視為正確
Migrated from old NTUJ.
JAG 2011 winter camp