import java.util.Scanner;

class Test {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String str1, str2, str3;
        str1 = in.nextLine();
        str2 = in.nextLine();
        str3 = in.nextLine();
        int L, M, N, n;
        L = Integer.parseInt(str1);
        M = Integer.parseInt(str2);
        N = Integer.parseInt(str3);

        //N * 25 -> M, M * 4 -> L, L * 10 -> n
        //WANT : _L + _M + _N

        int p1 = N / 25;
        int _N = N % 25;
        int p2 = p1 + M;
        int p3 = p2 / 4;
        int _M = p2 % 4;
        int p4 = p3 + L;
        int p5 = p4 / 10;
        int _L = p4 % 10;
        System.out.println(_L + _M + _N);
    }
}