import java.util.*;

/**
 * Created by btk on 2017/10/17.
 */
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 ret = 0;

        ret+=N%25;
        M+=N/25;
        ret+=M%4;
        L+=M/4;
        ret+=L%10;

        System.out.println(ret);

        sc.close();
    }
}