#include <string>
#include <vector>
#include <list>
#include <cmath>
#include <algorithm>
#include <map>
#include <set>
#include <iostream>
#include <cstdio>
#include <cstdlib>
using namespace std;

class RemovingParenthesis {
  public:
    int countWays(string s);
    map <string, int> C;
};

int RemovingParenthesis::countWays(string s)
{
  return 0;
}