#include <cstdlib>
#include <iostream>

int
select(int a, int b) {
	int c;
	do {
		c = rand() % 3;
	} while (c == a|c == b);

	return c;
}

int
main() {
	int cluelessHost = 0;

	for (int cluelessHost = 0; cluelessHost <= 1; cluelessHost++) {
		double total = 0, won = 0;
		for (int i = 0; i < 1e6; i++) {
			int prize = rand() % 3;
			int firstTry = rand() % 3;

			int opened;
			if (cluelessHost) {
				opened = select(firstTry, -1);

				if (opened == prize)
					continue;
			} else {
				opened = select(firstTry, prize);
			}

			int secondTry = select(firstTry, opened);
			if (secondTry == prize)
				won++;
			total++;
		}

		std::wcout << won / total << std::endl;
	}

	return 0;
}