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2 5 0 0 0 1 0 2 0 3 0 4 4 0 0 0 1 1 0 3 3
2.000000000 1.414213562
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.
tmt+ferng+dreamoon