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);

    }
}