#include<bits/stdc++.h>
using namespace std;
string s;
int main(){
    int c=0;
    cin>>s;
    for(int i=0;i<s.size();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: fuyijun
	Language: C++
	Result: Accepted
	Time:22 ms
	Memory:2076 kb
****************************************************************/