using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        Dictionary<string, int[]> dict = new Dictionary<string, int[]>();

        int[] vals = {3, 4};

        dict.Add("test", vals);

        foreach (KeyValuePair<string, int[]> data in dict)

        {

            Console.WriteLine(data.Key + ": " + data.Value[0]);

        }

    }

}