OJ Board

Input
9.238794 8 2

Output
100.0000

Is is OK?

I think "input" will be "9.238794 8 3" to get that "output".

I think this problem can solve by using "simple equation".
but I got WA.

I don't know why..

something mistake?

INPUT
5
3 5 3
1000 999 998
1000 5 999
34 684 653
500 500 500

OUTPUT
1.550759
214989.983489
23.742773
178.932623
53847.577293[/code][/cpp]