#include<bits/stdc++.h>
using namespace std;
int main(){
	int c=0;
	string s;
	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=0;j<=c;j++){
					cout<<s[i];
				}
			}
			c=0;
		}
	}
	return 0;
}

/**************************************************************
	Problem: 1104
	User: houshanglin
	Language: C++
	Result: Wrong Answer
****************************************************************/