import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int L = sc.nextInt();
        int M = sc.nextInt();
        int N = sc.nextInt();
        int total = L*100 + M*25 + N;
        int coinsum = total%1000;
        int c100 = coinsum/100 ;
        int c25 = (coinsum%100)/25 ;
        int c1 = coinsum%25 ;
        int r = c100 + c25 + c1 ;
        System.out.println(r);
    }
}