3Equal-numbers

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _3Equal_number
{
    class Program
    {
        static void Main(string[] args)
        {
            var Number1 = int.Parse(Console.ReadLine());
            var Number2 = int.Parse(Console.ReadLine());
            var Number3 = int.Parse(Console.ReadLine());
            if (Number1 == Number2)
            {
                if (Number3 == Number2)
                {
                    Console.WriteLine("yes");
                }
                else
                {
                    Console.WriteLine("no");
                }
            }
            else if (Number1 == Number3)
            {
                if (Number2 == Number1)
                {
                    Console.WriteLine("yes");
                }
                else
                {
                    Console.WriteLine("no");
                }
            }
            else if (Number2 == Number3)
            {
                if (Number3 == Number1)
                {
                    Console.WriteLine("yes");
                }
                else
                {
                    Console.WriteLine("no");
                }
            }
            else if (Number1 != Number2)
            {
                Console.WriteLine("no");
            }
            else if (Number2 != Number3)
            {
                Console.WriteLine("no");
            }
        }
    }
}