namespace Balanced_Parentheses
{
    using System;
    using System.Collections.Generic;

    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();

            Queue<char> parenthesesQueue = new Queue<char>(input);
            Stack<char> parenthesesStack = new Stack<char>(input);

            int counter = 0;

            for (int i = 0; i < input.Length / 2; i++)
            {
                char symbolFromQueue = parenthesesQueue.Dequeue();
                char symbolFromStack = parenthesesStack.Pop();
                if (symbolFromQueue == '{' && symbolFromStack == '}')
                {
                    counter++;
                }
                else if (symbolFromQueue == '(' && symbolFromStack == ')')
                {
                    counter++;
                }
                else if (symbolFromQueue == '[' && symbolFromStack == ']')
                {
                    counter++;
                }
            }

            if (counter == input.Length / 2)
            {
                Console.WriteLine("YES");
            }
            else
            {
                Console.WriteLine("NO");
            }
        }
    }
}