Problem:
Score : 100 points

Problem Statement

AtCoDeer the deer found two positive integers, a and b.
Determine whether the product of a and b is even or odd.

Constraints

1 ≤ a,b ≤ 10000

a and b are integers.

Input

Input is given from Standard Input in the following format:

a b

Output

If the product is odd, print Odd; if it is even, print Even.

Sample Input 1

3 4

Sample Output 1

Even

As 3 × 4 = 12 is even, print Even.

Sample Input 2

1 21

Sample Output 2

Odd

As 1 × 21 = 21 is odd, print Odd.

Solution in C# (Mono 4.6.2.0) (judge verdict: Wrong Answer)

using System;
class Program
{
	static void Main(string[] args)
	{
		// 整数の入力
		//int a = int.Parse(Console.ReadLine());
		// スペース区切りの整数の入力
		//string[] input = Console.ReadLine().Split(' ');
		//int b = int.Parse(input[0]);
		//int c = int.Parse(input[1]);
		// 文字列の入力
		//string s = Console.ReadLine();
		//出力
		//Console.WriteLine((a+b+c) + " " + s);
		
		int n = int.Parse(Console.ReadLine().Replace(" ", ""));
        int m = (int)Math.Sqrt((double)n) * (int)Math.Sqrt((double)n);
        if (n - m == 0)
        {
            Console.WriteLine("Yes");
        }
        else
        {
            Console.WriteLine("No");
        }
	}
}