#include <iostream>
#include <string>

using namespace std;

int main() {

	int width, length, height;
	cin >> width >> length >> height;
	int apVolume = width * length * height;

	string command;
	cin >> command;

	while (command != "Done")
	{
		int box = stoi(command);
		apVolume -= box;

		if (apVolume < 0)
		{
			break;
		}
		cin >> command;
	}

	if (apVolume >= 0)
	{
		cout << apVolume << " Cubic meters left.";
	}
	else
	{
		cout << "No more free space! You need " << abs(apVolume) << " Cubic meters more.";
	}



	return 0;
}