Hojjatjafary
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Image source problem with Image:Dr hassan abbasi.jpg
edit
Thanks for uploading Image:Dr hassan abbasi.jpg. I noticed that the file's description page currently doesn't specify who created the content, so the copyright status is unclear. If you did not create this file yourself, you will need to specify the owner of the copyright. If you obtained it from a website, then a link to the website from which it was taken, together with a restatement of that website's terms of use of its content, is usually sufficient information. However, if the copyright holder is different from the website's publisher, their copyright should also be acknowledged.
As well as adding the source, please add a proper copyright licensing tag if the file doesn't have one already. If you created/took the picture, audio, or video then the {{GFDL-self}} tag can be used to release it under the GFDL. If you believe the media meets the criteria at Wikipedia:Non-free content, use a tag such as {{non-free fair use in|article name}} or one of the other tags listed at Wikipedia:Image copyright tags#Fair use. See Wikipedia:Image copyright tags for the full list of copyright tags that you can use.
If you have uploaded other files, consider checking that you have specified their source and tagged them, too. You can find a list of files you have uploaded by following this link. Unsourced and untagged images may be deleted one week after they have been tagged, as described on criteria for speedy deletion. If the image is copyrighted under a non-free license (per Wikipedia:Fair use) then the image will be deleted 48 hours after 20:42, 17 February 2008 (UTC). If you have any questions please ask them at the Media copyright questions page. Thank you. Genisock2 (talk) 20:42, 17 February 2008 (UTC)
Non-recursive DFS
editPlease read http://11011110.livejournal.com/279880.html — your recent edit to DFS makes a common mistake. —David Eppstein (talk) 23:32, 18 September 2016 (UTC)