import java.util.Scanner;

public class Chokin{
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);
        int coin1 = sc.nextInt();
        int coin25 = sc.nextInt();
        int coin100 = sc.nextInt();
        coin25 += (coin1/25);
        coin1 = (coin1%25);
        coin100 += (coin25/4);
        coin25 = (coin25%4);
        coin100 = (coin100%10);
        System.out.println(coin1+coin25+coin100);

    }
}