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();
        
     if (n >= 25){
        m += n/25;
        n = n%25;
     }if (m >= 4){
        l += m/4;
        m = m%4 ;
     }if (l >= 10){    
        l = l%10;
     }
     System.out.println(l + m + n);
    }
}