import java.util.*;
class y32 {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a, h = sc.nextInt(), q = sc.nextInt(), o = sc.nextInt();
		a = (h*100+q*25+o)%1000;
		System.out.println(a/100+(a%100)/25+a%25);
		sc.close();
	}
}