Untitled

using System;
using System.Collections.Generic;
namespace STack
{
    class Program
    {
        static void Main(string[] args)
        {
            Stack<int> myStack = new Stack<int>();
            string abc = "{}{}{{{}}}{";
            for (int i =0; i<abc.Length; i++) {
                if (abc[i] == '{')
                    myStack.Push(abc[i]);
                else if (abc[i] == '}')
                {
                    if (myStack.Peek() == '{') myStack.Pop();
                    else myStack.Push(abc[i]);
                }
            }
            if (myStack.Count == 0)
                Console.WriteLine("Балансирани");
            else
                Console.WriteLine("Небалансирани");
        }
    }
}