import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        //ここから処理開始
        int L = sc.nextInt();
        int M = sc.nextInt();
        int N = sc.nextInt();

        int O = N / 25;
        int P = (O + M) / 4;
        int Q = (P + L) / 10;


        System.out.println(N % 25 + P % 4 + Q % 10);


            //ここまで
        sc.close();
    }
}