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

class WaterAndOxygen {
  public:
    double maxDays(int remainH20, int remainO2, int costH2O, int costO2);
};

double WaterAndOxygen::maxDays(int remainH20, int remainO2, int costH2O, int costO2)
{
  return 0;
}