#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: chenyaohuo
	Language: C++
	Result: Accepted
	Time:13 ms
	Memory:2076 kb
****************************************************************/