import java.util.Scanner;
public class StringFormatter {
public static void main(String[] args) {
Scanner input=new Scanner(System.in);
System.out.println(replaceNumerals(input.nextLine()));
}
public static String replaceNumerals(String input){
StringBuilder output=new StringBuilder();
for(int i=0;i<input.length();i++){
if(Character.isDigit(input.charAt(i))){
for(int j=1;j<Integer.valueOf(Character.toString(input.charAt(i)));j++){
output.append(input.charAt(i+1));
}
}else{
output.append(input.charAt(i));
}
}
return output.toString();
}
}
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