package yukicoder;

import java.util.Scanner;

public class Yukicoder {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int one = sc.nextInt();// 1円硬貨枚数
		int twentyFive = sc.nextInt();// 25円硬貨枚数
		int hundred = sc.nextInt();// 100円硬貨枚数
		sc.close();
		int totalCoin = 0;// 硬貨の合計枚数

		// 両替処理開始
		totalCoin = hundred / 25;
		hundred -= totalCoin * 25;
		twentyFive += totalCoin;

		totalCoin = 0;
		totalCoin = twentyFive / 4;
		twentyFive -= totalCoin * 4;
		one += totalCoin;

		totalCoin = 0;
		totalCoin = one / 10;
		one -= totalCoin * 10;

		totalCoin = one + twentyFive + hundred;

		System.out.println(totalCoin);
	}
}