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4 3 3 0 0 2 2 ... ... ... 3 3 0 0 2 2 ... .#. ... 3 4 0 0 1 3 .... .##. .... 2 2 0 0 1 1 .# #.
2.828427125 3.162277660 3.256616538 Impossible
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