SP2903 TRANSP1 - Transportation

Blue Mary, the queen of Protoss, is planning a war against Zerg. Before the war she plans to make her base as safe as possible. Now there are _N_ (1

Ten test cases(given one after another, you have to process all!). For each test case: The first line contains _N_, _M_ and a real number _k_ (0.3

For each test case: A single line - the maximized safety of nexus 1, rounded to two decimal places.