using System;

class BalansiraneZagrade {
  static void Main() {
    Console.Write("Tekst -> ");
    string s = Console.ReadLine();
    int br = 0;
    foreach(char c in s) {
      if(c == '(') { br++; }
      else if(c == ')') { br--; }
      if(br < 0) { break; }
    }
    if(br == 0) {
      Console.WriteLine("Zagrade su balansirane");
    }
    else {
      Console.WriteLine("Zagrade nisu balansirane");
    }
  }
}