gistfile1.hpp

#include <vector>
#include <string>
#include <algorithm>
#include <cmath>
using namespace std;
 
class CompletingBrackets {
public:
	 
	string complete(string text)
	{
		int nLeft = 0;//']'
		int nRight = 0;

		for(int i = 0 ; i < text.size(); i++)
		{
			if(text[i] == '[')
			{
				nRight++;
			}
			else
			{
				if (nRight==0)
					nLeft++;
				else
					nRight--;
			}
		}
		return string(nLeft,'[')+text+string(nRight,']');
		
	}
 
};