#include<iostream>
#include<vector>

int main() {
	int animals;

	std::cin >> animals;
	
	std::vector<int> socks(animals);

	for (int i = 0; i < animals; i++) {
		std::cin >> socks[i];
	}
	
	int crane = 0, turtle = 0;
	for (int i = 0; i < animals; i++) {
		for (int j = 0; j < animals; j++) {
			int c = j;
			int t = animals - 1 - j;
			if (2 * c + 4 * t == socks[i]) {
				//std::cout << c << " " << t << std::endl;
				if (i == 0 || (t == turtle)) {
					crane = c;
					turtle = t;
				} else {
					if (crane + 1 == c) {
						std::cout << c << " " << turtle << std::endl;
						return 0;
					} else {
						std::cout << crane << " " << t << std::endl;
						return 0;
					}
				}
			}
		}
	}
	std::cout << (socks[0] / (animals - 1) == 2 ? animals : 0) << " " << (socks[0] / (animals - 1) == 4 ? animals : 0) << std::endl;
	return 0;
}