static boolean isStrange(long x){
        long length = String.valueOf(x).length();
        if (length == 1)    
                return true;
        if ((x%length == 0) && isStrange(x/length))    
                return true;
        return false;
}

static int solve(long l, long r) {
        int count = 0;
        for (long i = l; i<=r; i++) 
                if (isStrange(i))   
                        count++;
        return count;
}