import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc=new Scanner(System.in); char[]c=sc.next().toCharArray(); StringBuffer str=new StringBuffer (); for (int i = 0; i < c.length; i++) { if(c[i]>='1'&&c[i]<='9'){ for (int j = 1; j < c[i]-'0'; j++) str.append(c[i-1]); } else str.append(c[i]); } System.out.println(str); } }
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