import java.util.Scanner;
 
 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 sum = 100*L+25*M+N;

         int A = sum%1000;
         int B = A%100;
         int C = B%25;
           
         System.out.println(A/100 + B/25 + C);
         
     }
 }