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Jul 30, 2020 at 8:02 vote accept CommunityBot
Jul 29, 2020 at 7:37 answer added Сергей Макеев timeline score: 0
Jul 28, 2020 at 22:13 comment added user114966 Think about palindrome recognition example: with multiple heads you can do this in linear time, while for one head it requires quadratic time (check references of paper "Palindrome recognition using a multidimensional tape")
Jul 28, 2020 at 21:23 history edited user122281 CC BY-SA 4.0
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Jul 28, 2020 at 20:53 history edited user122281 CC BY-SA 4.0
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Jul 28, 2020 at 20:47 history asked user122281 CC BY-SA 4.0