#include<bits/stdc++.h>
using namespace std;
string s; 
int c; 
int main(){
    cin>>s;
    for(int i=0;i<=s.size()-1;i++){ 
        if(s[i]>='0'&&s[i]<='9'){ 
            c=c*10+s[i]-'0';     
        } else{
            if(c==0) cout<<s[i]; 
            else{
                for(int j=1;j<=c;j++) cout<<s[i];
            }
            c=0;
        }
    }
 
 
    return 0;
}
/**************************************************************
	Problem: 1104
	User: huxuanchen
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2076 kb
****************************************************************/