import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int en100 =sc.nextInt();
        int en25 =sc.nextInt();
        int en1 =sc.nextInt();
        int en1000 =0;

            while((en1/25)>0){
                en25=en25+1;
                en1=en1-25;
            }
            while((en25/4)>0){
                en100=en100+1;
                en25=en25-4;
            }
            while((en100/10)>0){
                en1000=en1000+1;
                en100=en100-10;
            }

        System.out.println(en100+en25+en1);
        sc.close();
    }
}