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: Wrong Answer)

using System;
using System.Linq;
using System.Collections.Generic;
public class rectangle
{
    public static void Main()
    {
        string[] strs = Console.ReadLine().Split(' ');
        int[] num = new int[strs.Length];
        for (int i = 0; i < strs.Length; i++)
        {
            num[i] = int.Parse(strs[i]);
        }
        System.Console.WriteLine((num[0] * num[1]) + " ");
        System.Console.WriteLine((num[0] + num[1]) * 2);
    }
}