import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String s = "h3jv28sf";
		Matcher m = Pattern.compile("([a-z])([0-9]+)").matcher(s);
		StringBuffer sb = new StringBuffer();
		while (m.find()) {
			m.appendReplacement(sb, s_repeat(m.group(1), Integer.parseInt(m.group(2))));
		}
		m.appendTail(sb);
		System.out.println(sb.toString());
	}
 
	private static String s_repeat(String string, int count) {
		StringBuilder sb = new StringBuilder();
		for(int i = 0; i < count; i++){
			sb.append(string);
		}
	    return sb.toString();
	}
}

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