import java.util.*;

class Main {
	static Scanner sc = new Scanner(System.in);
	public static void main(String[] args) {
		
		int en1000 = 0;
		int en100 = sc.nextInt();
		int en25 = sc.nextInt();
		int en1 = sc.nextInt();
		
		en25 += en1/25;
		en1 %= 25;
		
		en100 += en25/4;
		en25 %= 4;
		
		en1000 += en100/10;
		en100 %= 10;
		
		System.out.println(en100+en25+en1);
		
	}
}