lukasvermeer

# simulation to solve puzzle posed in https://www.twitter.com/jben0/status/1088146700735139840

k = 10

# enumerate all potential combinations of flips
# (also copies first two students to end of the string to fake a circle)
f = map(x->(x^2)[1:k+2],[ bitstring(n)[65-k:64] for n in 0:2^k-1 ])

# condition on at least one student with heads on either side
c = filter(l->size(collect(eachmatch(r"1.1",l)),1)>0,f)

staltz

101com.com, 101order.com, 123found.com, 180hits.de, 180searchassistant.com, 1x1rank.com, 207.net, 247media.com, 24log.com, 24log.de, 24pm-affiliation.com, 2mdn.net, 2o7.net, 360yield.com, 4affiliate.net, 4d5.net, 50websads.com, 518ad.com, 51yes.com, 600z.com, 777partner.com, 77tracking.com, 7bpeople.com, 7search.com, 99count.com, a-ads.com, a-counter.kiev.ua, a.0day.kiev.ua, a.aproductmsg.com, a.collective-media.net, a.consumer.net, a.mktw.net, a.sakh.com, a.ucoz.net, a.ucoz.ru, a.xanga.com, a32.g.a.yimg.com, aaddzz.com, abacho.net, abc-ads.com, absoluteclickscom.com, abz.com, ac.rnm.ca, accounts.pkr.com.invalid, acsseo.com, actionsplash.com, actualdeals.com, acuityads.com, ad-balancer.at, ad-balancer.net, ad-center.com, ad-images.suntimes.com, ad-pay.de, ad-rotator.com, ad-server.gulasidorna.se, ad-serverparc.nl, ad-souk.com, ad-space.net, ad-tech.com, ad-up.com, ad.100.tbn.ru, ad.71i.de, ad.980x.com, ad.a8.net, ad.abcnews.com, ad.abctv.com, ad.about.com, ad.aboutit.de, ad.aboutwebservices.com, ad.abum.com,