#include<bits/stdc++.h>
using namespace std;
string s;
int c;
int main(){
	cin>>s;
	for(int i=0;i<=s.size()-1;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: linyuhang
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2076 kb
****************************************************************/