#include <iostream>

int main(int argc, char *argv[]) {
	int coin_1_num = 0;
	int coin_25_num = 0;
	int coin_100_num = 0;
	int paper_1000_num = 0;

	std::cin >> coin_100_num;
	std::cin >> coin_25_num;
	std::cin >> coin_1_num;

	coin_25_num += (coin_1_num / 25);
	coin_1_num -= ((coin_1_num / 25) * 25);
	
	coin_100_num += (coin_25_num / 4);
	coin_25_num -= ((coin_25_num / 4) * 4);

	paper_1000_num += (coin_100_num / 10);
	coin_100_num -= ((coin_100_num / 10) * 10);

	std::cout << coin_1_num + coin_25_num + coin_100_num << std::endl;

	return 0;
}