User-agent: Yandex
Disallow: /*?*
Disallow: /*.doc
Disallow: /*.docx
Disallow: /*.pdf
Disallow: /*.xls
Disallow: /*.xlsx
Disallow: /*.swf
Disallow: /eror-404

Host: 

User-agent: *
Disallow: /*?*
Disallow: /*.doc
Disallow: /*.docx
Disallow: /*.pdf
Disallow: /*.xls
Disallow: /*.xlsx
Disallow: /*.swf
Disallow: /eror-404

Sitemap: sitemap.xml