import java.util.Scanner;

/**
 * @author txb
 * @create 2020-10-14-16:13
 */
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String s = in.nextLine();
        for (int i = 0;i<s.length();i++){
            if (s.charAt(i)>='0'&&s.charAt(i)<='9'){
                int t = s.charAt(i)-'0';
                for (int j = 0;j<t-1;j++){
                    System.out.print(s.charAt(i-1));
                }
            }else{
                System.out.print(s.charAt(i));
            }
        }
    }
}