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 C# (judge verdict: Accepted)

using System;

class Program
{
    static void Main()
    {
        string[] input = Console.ReadLine().Split(' ');

        int a = int.Parse(input[0]);
        int b = int.Parse(input[1]);

        var erea = a * b;

        var leng = a * 2 + b * 2;

        Console.WriteLine("{0} {1}", erea, leng);
    }
}