package javap;
import java.util.Scanner;

public class uppg6 {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String text = scan.nextLine();

        String output = decompress(text);
        System.out.println(output);

        scan.close();
    }

    private static String decompress(String text) {
        int i = 0;
        if(text.equals("") || text.length() == 1) return text;

        //LETTER
        if(Character.isLetter(text.charAt(i))){
            return text.substring(0,1) + decompress(text.substring(1)); //ret letter and decompress rest
        }

        //DIGIT
        else if(Character.isDigit(text.charAt(i))){
            int number = Integer.parseInt(text.substring(0,1));
            if(Character.isDigit(text.charAt(i+1))){ //covers 1-99
                number = Integer.parseInt(text.substring(0,2));
            }

            int len = Integer.toString(number).length();

            if(text.charAt(i+len) == '('){ //new substring
                int left = 1;
                int right = 0;
                int endPos = 0;

                while(right != left){
                    for(endPos = text.indexOf(text.charAt(i+len+1)); endPos < text.length(); endPos++){
                        if(text.charAt(i+len+endPos) == ')'){
                            right++;
                        }
                        else if(text.charAt(i+len+endPos) == '('){
                            left++;
                        }
                        endPos++;
                    }
                }

                return multiple(text.substring(len+1, endPos), number) + decompress(text.substring(endPos+1));
            }
            else{ //if letter after digit
                return multiple(text.substring(len, len+1), number) + decompress(text.substring(len+1));
            }

        }
        return text;

    }

    private static StringBuilder multiple(String substring, int number) {
        StringBuilder sb = new StringBuilder();
        int i = 0;
        while (i<number){
            sb.append(decompress(substring));
            i++;
        }
        return sb;
    }
}