Problems

# Four Square

# Four Square

Direct **x = a** and **y = b** divide the quadrilateral with vertices **A**(**0**, **0**), **B**(**0**; **y1**), **C**(**x1**; **y1**), **D**(**x1**; **0**) into four parts. Determine the square formed by the figures.

**Input**

In a single line through the space defined four integers: **a**, **b**, **x1** and **y1**. All input data for the module does not exceed **100**.

**Output**

Print the first area of a quadrilateral **APQM**, then through the gap - **PBOQ**, then through the gap - **QOCK**, and, finally, through the gap - **MQKD**. The results lead to three decimal.

Input example #1

3 2 9 6

Output example #1

6.000 12.000 24.000 12.000