#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;
		}
	
	}
} 

}

/**************************************************************
	Problem: 1104
	User: wuzhijing
	Language: C++
	Result: Accepted
	Time:17 ms
	Memory:2076 kb
****************************************************************/