An elephant thirsty, drink 20 liters of water to quench their thirst, but now only a centimeter deep h, a bottom radius r cm small drums (h and r are integers). Q. How many buckets of water elephants drink at least until thirst. (Based PAI = 3.14159) (? Input sample output representative of a space) input line: small drums deep h, and a bottom radius r, units are centimeters. The output of two lines: the first line prompt for the statement barrels for at least a second elephant drinking behavior.

大象喝水.cpp

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