Competitions

# PP2. Week 5: April 5 - 11

# Function - 3

Implement a function **f**(**x**, **y**) = `x`

+ ^{2}**sin**(**x** * **y**) - `y`

.^{2}

#### Input

Each line contains two real numbers **x** and **y**.

#### Output

For each test case print in a separate line the value of the function **f**(**x**, **y**) with four digits after the decimal point.

Input example #1

2.234 2.12 10 23 56.1 0.012 23.26 5.1

Output example #1

-0.5034 -429.6161 3147.8333 514.3327