using System;
using System.Text;

class Program
{
    // Write a program to check if in a given expression the brackets are put correctly.
    // Example of correct expression: ((a+b)/5-d).
    // Example of incorrect expression: )(a+b)).

    static void Main()
    {
        string expression1 = "((a+b)/5-d)";
        CheckingBreckets(expression1);
        string expression2 = ")(a+b))";
        CheckingBreckets(expression2);
    }
    public static void CheckingBreckets(string expression)
    {
        StringBuilder sb = new StringBuilder();

        for (int i = 0; i < expression.Length; i++)
            {
            if(expression[i]=='('||expression[i]==')')
                sb.Append(expression [i]);
            }

       bool isSymetric = true;
       int length = sb.Length;

       if (length >= 2)
       {
           for (int i = 0; i < length / 2; i++)
           {
               if (sb[i] == '(' && sb[length - i - 1] == ')')
               {
                   isSymetric = true;
                   continue;
               }
               else
               {
                   isSymetric = false;
                   break;
               }
           }
           Console.WriteLine(isSymetric);
       }
       else
       {
           isSymetric = false;
           Console.WriteLine(isSymetric);
       }
    }
}