SP29452 LOSTBOX - Width of The Lost Box

Minas had a box of marble which is lost last week. About that box Minas only know that length and height of the box was **L** and **H**, and box contains **K** marbles. But he forget the width of the box. But he remember that **width = 2 \* radius** of marble and width is also an integer. You can assume that all marble are same. Now, Minas will give you **L, H** and **K**. You need to tell him the width of the box. If the width is less than 1 then print **-1**.

Input starts with an integer **T (1

For each case of input, print the case number as **"Case #: x"**, **\#** is replaced by the case number starting from 1 and **x** is replaced by the **maximum possible** width of the box.