import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner koko = new Scanner(System.in);
        int l = koko.nextInt();
        int m = koko.nextInt();
        int n = koko.nextInt();
        int s = 100*l+25*m+n;
        int ms = s%1000;
        int mms = ms%100;
        int mmms = mms%25;
        System.out.println(((ms-mms)/100)+((mms-mmms)/25)+mmms);
        }
    }