#include <bits/stdc++.h>

using namespace std;

string foo(int n, string s)
{
    string ans;
    while (n > 0)
	{
        n--;
        ans += s;
    }
    return ans;
}

int main()
{
    string s;
    stack <pair <char, int> > a;

    cin >> s;

    for (int i = 0; i < s.size(); ++i)
	{
        if (s[i] == '(')
			a.push({'(', i});
        else
		 if (s[i] == ')')
		 {
            int size_new = s.size();
            int begin = a.top().second + 1;
            int m = 0;
            for (begin; begin < i; ++begin)
			{
                if('0' <= s[begin] && s[begin] <= '9')
				{
                    m *= 10;
                    m += (s[begin] - '0');
                }
				else
					break;
            }

            string res = foo(m, s.substr(begin, i - begin));
            s.replace(a.top().second, i - a.top().second + 1, res);
            a.pop();
            i += s.size() - size_new;
        }
    }

    cout << s;

    return 0;
}