#include <iostream>
using namespace std;
	
char s1[100], s2[100]; 

int main()
{
	int t = 0;
	cin >> s1;
	int i = 0;
	while (s1[i] != '\0')
	{
		if(s1[i] == '(')
		{
			cout << s1[i];
			s2[t] = s1[i];
			t++;		
		}
		if(s1[i] == ')')
		{
			if(t != 0)
			{
				cout << s1[i];
				t--;
			}
			else
			{
				cout << "(" << s1[i];			
			}		
		}
		i++;	
	}
	while(t != 0)
	{
		cout << ")";
		t--; 
	}	
	return 0;
}