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;
using System.Collections.Generic;
using System.Linq;

namespace AizuOnlineJudge
{
    class Program
    {
        static void Main(string[] args)
        {
            var x = Converter(Console.ReadLine());
            Console.WriteLine(Calc(x));
        }

        static List<int> Converter(string str)
        {
            var array = str.Split(' ').ToList();
            return array.ConvertAll(int.Parse);
        }

        static string Calc(List<int> x)
        {
            int area = x.Aggregate((now, next) => now * next);
            int length = x.Aggregate((now, next) => (now * 2) + (next * 2));
            return area + " " + length;
        }
    }
}