URI Online Judge | 1043

Triangle

Adapted by Neilor Tonin, URI Brazil

Timelimit: 1

Read three point floating values (A, B and C) and verify if is possible to make a triangle with them. If it is possible, calculate the perimeter of the triangle and print the message:


Perimetro = XX.X


If it is not possible, calculate the area of the trapezium which basis A and B and C as height, and print the message:


Area = XX.X

Input

The input file has tree floating point numbers.

Output

Print the result with one digit after the decimal point.

Input Sample Output Sample

6.0 4.0 2.0

Area = 10.0

6.0 4.0 2.1

Perimetro = 12.1