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 coins = 0;
         
        //  System.out.println(sum);
         
         if(sum>1000){
             int A = sum%1000;
             int B = A%100;
             int C = B%25;
             coins = A/100 + B/25 + C;
            //  System.out.println(A);
            //  System.out.println(A/25);
            //  System.out.println(B);
         }else{
             int B = sum%25;
             coins = sum/25 + B;
            //  System.out.println(B);
         }
         System.out.println(coins);
         
     }
 }