#include<bits/stdc++.h>
using namespace std;
int main(){
	string s;
	cin>>s;
	int c=0;
	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: zzz
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2076 kb
****************************************************************/