Is it possible to first close all pages from indexing and then enable only some?

Question

robots.txt

Will this robots.txt be correct?

User-agent: *
Disallow: /
Allow: /price/
Allow: /contacts

Will there be conflicts or will the line below be a priority for the robot?
And how in this case to allow for indexing the main page, which is located at http://domen.ru/?
PS I know about verification services, but I did not find information on this issue on the Internet. Let there be a manual in the form of your answers).

Answer 1

See the Yandex.Webmaster cheat sheet :
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The Allow and Disallow directives from the corresponding User-agent block are sorted by URL prefix length (from smallest to largest) and are applied sequentially. If several directives are suitable for a given page of the site, then the robot selects the last one in the order of appearance in the sorted list. Thus, the order of the directives in the robots.txt file does not affect how the robot uses them.
In the event of a conflict between two directives with prefixes of the same length, the Allow directive takes precedence.
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