#include<bits/stdc++.h>
using namespace std;
int main(){
     string s;
     int c=0;
     cin>>s;
     for(int i=0;i<=s.size();i++){
     	if('0'<=s[i]&&s[i]<='9')c=c*10+(s[i]-'0');
        else{
        	if(c>0){     
			 		for(int j=1;j<=c;j++)cout<<s[i];
        		}		
        	else cout<<s[i];
        	    
        	 c=0;      
            }
     	
     }
      
    return 0;
}
/**************************************************************
	Problem: 1104
	User: duyahan
	Language: C++
	Result: Wrong Answer
****************************************************************/