Hello, codeforces! I want to ask some questions about codeforces and polygon (I make tasks on polygon):

1. Can I do so, that solutions, which fall on the first test, will not be counted in table?

2. Can I add pretests and hacks to my contests?

3. Can I add deferred publication to my blog (for example for editorial)?

4. Can I somehow copy some contest so, that I would be able to edit condition?

5. Can I add score for tasks?