using System;

    class BracketsCheck
    {
        static void Main()
        {
            string expression = "((a+b(/5-c)";
            int opened = 0;
            int closed = 0;

            for (int i=0; i<expression.Length; i++)
            {
                if (expression[i].Equals('('))
                {
                    opened++;
                }
                else if (expression[i].Equals(')'))
                {
                    closed++;
                }
            }
            Console.WriteLine("There are {0} open breckets and {1} close bracker into the expression!", opened, closed);
            if (opened==closed)
            {
               Console.WriteLine("=> The expression is correct!");
            }
            else
            {
                Console.WriteLine("=> The expression is wrong!");
            }
        }
    }