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;
using System.Text;
using System.Threading.Tasks;

namespace 競プロ_Csharp {
    class Program {
        static void Main(string[] args) {

            int[] a = nextIntsLine();
            println((a[0] * a[1]) + " " + (2 * a[0] + 2 * a[1]));

        }

        public static void println (Object o) {
            Console.WriteLine(o);
        }

        public static int nextIntLine () {
            return int.Parse(Console.ReadLine());
        }

        public static int[] nextIntsLine () {
            return Console.ReadLine().Split().Select(int.Parse).ToArray();
        }
    }
}