package com.company;

public class Main {

    public static void main(String[] args) {
        System.out.println(line());
    }

    private static String line() {
        StringBuilder str = new StringBuilder("");
        for (int i = 0; i <= 30; i++) {
            str.append("(");
            str.append(i);
            str.append(")");
        }
        return str.toString();
    }
}