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

namespace BooleanVariable
{
    class Program
    {
        static void Main(string[] args)
        {
            string word = Console.ReadLine();
            bool wordAsBool = Convert.ToBoolean(word);
            switch (wordAsBool)
            {
                case true: Console.WriteLine("Yes"); break;
                case false: Console.WriteLine("No"); break;
            }
        }
    }
}
