using System;

public class Program

{

    public static void Main()

    {

        int n,i,j,t,b,c=0,d=0,e=0;

        Console.WriteLine("Enter value of n:");

        n=Convert.ToInt32(Console.ReadLine());

        int [] a=new int[n];

        Console.WriteLine("Enter values to array:");

        for(i=0;i<=n-1;i++)

        {

            a[i]=Convert.ToInt32(Console.ReadLine());

        }

        for(i=0;i<=n-1;i++)

        {

            for(j=0;j<=n-2-i;j++)

            {

                if(a[j]>a[j+1])

                {

                    t=a[j+1];

                    a[j+1]=a[j];

                    a[j]=t;

                }

            }

        }

            for(i=0;i<=n-1;i++)

            {

                Console.WriteLine("{0}",a[i]);

            }

​

            for(i=n-1;i>=1;i--)

            {

                b=a[i]-a[i-1];

                if(b<c)

                {

                    d=a[i-1];

                    e=a[i];

                }

                c=b;

            }

        Console.WriteLine("{0} {1}",d,e);

    }

}