#include <iostream>

int main() {
	const int coins[3] = { 100, 25, 1 };
	int account = 0;
	for (const auto &coin : coins) {
		int a;
		std::cin >> a;
		account += a * coin;
	}
	account %= 1000;
	int sum = 0;
	for (const auto &coin : coins) {
		sum += account / coin;
		account %= coin;
	}
	std::cout << sum << std::endl;
	return 0;
}