import java.util.Scanner;

public class A000032 {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int total = sc.nextInt()*100+sc.nextInt()*25+sc.nextInt();
		sc.close();
		int r = (total%1000)/100;
		r+=(total%100)/25;
		r+=total%25;
		
		System.out.println(r);
	}
}