import java.util.*;

public class Main {
    private static Scanner sc = new Scanner(System.in);
    public static void main(String[] args) throws Exception {
        int l = sc.nextInt();
        int m = sc.nextInt();
        int n = sc.nextInt();
        
        m += n/25;
        n %= 25;
        l += m/4;
        m %= 4;
        l %= 10;
        
        System.out.println(l+m+n);
    }
}