Problem:
Rectangle

Write a program which calculates the area and perimeter of a given rectangle.

Input

The length a and breadth b of the rectangle are given in a line separated by a single space.

Output

Print the area and perimeter of the rectangle in a line. The two integers should be separated by a single space.

Constraints

1 ≤ a, b ≤ 100

Sample Input 1

3 5

Sample Output 1

15 16

Solution in Kotlin (judge verdict: Accepted)

fun main(args: Array<String>){
    val aspects : List<Int>? = readLine()?.split(" ")?.map { Integer.parseInt(it)}
    if ( aspects != null && aspects.isNotEmpty() ) {
        println("${calcArea(aspects[0], aspects[1])} ${calcPerimeter(aspects[0], aspects[1])}")
    }
}

fun calcArea(height: Int, width: Int) : Int = height * width

fun calcPerimeter(height: Int, width: Int) : Int = height * 2 + width * 2