#include<bits/stdc++.h>
using namespace std;
string s;
int c;
int main(){
	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: hongjiaming
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2076 kb
****************************************************************/