#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s;
	int c = 0;
	cin >> s;
	for( int i = 0; i < s.size(); i++)
	{
		if(s[i]>='0' && s[i] <='9')
		{
			c = c * 10 + int(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:14 ms
	Memory:2076 kb
****************************************************************/