#include <iostream>
using namespace std;

const int N = 200;

void revers(char * res, int &n) {
   char a;
   cin >> a;
   if (a == ')') return;
   else revers(res, n);
   res[n++] = a;
}

int main() {
   char res[N];
   char a;
   int n = 0;
   while (cin >> a) {
      if (a == '(') revers(res, n);
      else res[n++] = a;
   }
   for (int i = 0; i < n; i++)
      cout << res[i];
   return 0;
}