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


public class Test
{
	public static void Main()
	{
		int[] arr = { 1, 2, 3};
		string[] arr2 = arr.Select(el => el + "a").ToArray();
		
		foreach (var str in arr2)
			Console.Write(str + " ");
	}
}