#include<bits/stdc++.h>
using namespace std;
int main(){
	string s;
	int a=0,i;
	getline(cin,s);
	for(i=0;i<s.size();i++){
		if(s[i]>='0'&&s[i]<='9') a=a*10+int(s[i]-48);
		else{	
			if(a!=0) for(int j=0;j<a;j++) cout<<s[i];
			else cout<<s[i];
			a=0;
		}		
	}
return 0;}

/**************************************************************
	Problem: 1104
	User: fzy001
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2076 kb
****************************************************************/