Taking that internship in a remote mountain lab might not have been the best idea. Pulling that lever with the skull symbol just to see what it did probably wasn't so smart, either, but now is not the time for regrets because you need to get away from these mutant zombies fast. With you are the janitor, the lab assistant, and the old professor. You've gotten a headstart, but there's only one way to safety: across an old rope bridge spanning a massive gorge. You can dash across in a minute, while the lab assistant takes two minutes. The janitor is a bit slower and needs five minutes, and the professor takes a whole ten minutes, holding onto the ropes every step of the way. By the professor's calculations, the zombies will catch up to you in just over 17 minutes, so you only have that much time to get everyone across and cut the ropes. Unfortunately, the bridge can only hold two people at a time. To make matters worse, it's so dark out that you can barely see, and the old lantern you grabbed on your way only illuminates a tiny area. Can you figure out a way to have everyone escape in time? Remember: no more than two people can cross the bridge together, anyone crossing must either hold the lantern or stay right next to it, and any of you can safely wait in the dark on either side of the gorge. Most importantly, everyone must be safely across before the zombies arrive. Otherwise, the first zombie could step on the bridge while people are still on it. Finally, there are no tricks to use here. You can't swing across, use the bridge as a raft, or befriend the zombies. Pause the video now if you want to figure it out for yourself! Answer in: 3 Answer in: 2 Answer in: 1 At first it might seem like no matter what you do, you're just a minute or two short of time, but there is a way. The key is to minimize the time wasted by the two slowest people by having them cross together. And because you'll need to make a couple of return trips with the lantern, you'll want to have the fastest people available to do so. So, you and the lab assistant quickly run across with the lantern, though you have to slow down a bit to match her pace. After two minutes, both of you are across, and you, as the quickest, run back with the lantern. Only three minutes have passed. So far, so good. Now comes the hard part. The professor and the janitor take the lantern and cross together. This takes them ten minutes since the janitor has to slow down for the old professor who keeps muttering that he probably shouldn't have given the zombies night vision. By the time they're across, there are only four minutes left, and you're still stuck on the wrong side of the bridge. But remember, the lab assistant has been waiting on the other side, and she's the second fastest of the group. So she grabs the lantern from the professor and runs back across to you. Now with only two minutes left, the two of you make the final crossing. As you step on the far side of the gorge, you cut the ropes and collapse the bridge behind you, just in the nick of time. Maybe next summer, you'll just stick to the library.
Prihvatanje stažiranja u laboratoriji na udaljenoj planini možda i nije bila baš najbolja ideja. Ni povlačenje ručice sa kosturskom glavom samo da biste videli njenu svrhu verovatno nije bila najpametnija ideja, ali sada nema vremena za žaljenje jer treba brzo da pobegnete od zombija mutanata. Sa vama su: domar, laboratorijski pomoćnik i stari profesor. Imate prednost, ali samo je jedan put ka bezbednosti - preko starog mosta od konopca koji se prostire prego ogromne klisure. Možete da pretrčite preko njega za minut, dok laboratorijskom pomoćniku treba dva minuta. Domar je nešto sporiji i treba mu pet minuta, a profesoru treba čitavih deset minuta, dok se drži za užad prilikom svakog koraka koji napravi. Prema profesorovim proračunima, zombiji će vas sustići za samo 17 minuta, pa imate samo toliko vremena da sve prebacite preko i presečete užad. Nažalost, most može da izdrži težinu samo dva čoveka istovremeno. Da stvari budu još gore, toliko je mračno da jedva vidite, a stara lampa koju ste usput zgrabili osvetljava majušno područje. Možete li da smislite način da svi pobegnu na vreme? Setite se - više od dvoje ljudi istovremeno ne može da prelazi most, svako ko prelazi mora ili da drži lampu, ili da stoji odmah pored nje, a bilo ko od vas može bezbedno da sačeka u mraku na bilo kojoj strani litice. Kao najvažnije, svi moraju da se bezbedno prebace pre nego što zombiji stignu. U suprotnom, prvi zombiji bi mogli zakoračiti na most dok su ljudi još uvek na njemu. Konačno, ovde ne možete koristiti trikove. Ne možete da se prebacite užetom, koristite most kao splav, ili da se sprijateljite sa zombijima. Zaustavite sada video ako hoćete da sami shvatite! Odgovor za 3, odgovor za 2, odgovor za 1. Ispočetka se može činiti da, bez obzira šta radili, uvek vam fali minuta ili dve, ali postoji način. Ključ je u tome da se gubitak vremena zbog dvojice najsporijih svede na minimum, tako što će preći zajedno. Pošto treba par puta da se vratite sa lampom, želećete da imate najbrže ljude koji će to uraditi. Tako, vi i laboratorijski pomoćnik brzo pretrčite preko sa lampom, iako morate malo da usporite da biste išli ukorak s njom. Posle dva minuta, oboje ste prešli, a vi, kao najbrži, otrčite nazad sa lampom. Prošlo je samo 3 minuta. Dobro je za sada. Sada nailazi težak deo. Profesor i domar uzimaju lampu i prelaze zajedno. Za ovo im treba deset minuta pošto domar mora da uspori zbog starog profesora koji mrmlja sve vreme da verovatno nije trebalo da zombijima da noćni vid. Dok oni pređu ostaje samo četiri minuta, a vi ste i dalje zaglavljeni na pogrešnoj strani mosta, ali setite se, laboratorijski pomoćnik čeka na drugoj strani, a ona je druga po brzini u grupi. Znači, ona će zgrabiti lampu iz profesorovih ruku i otrčati natrag do vas. Sada, sa samo dva preostala minuta, vas dvoje prelazite po poslednji put. U trenutku kada zakoračite na udaljenu stranu litice, sečete konopce i urušavate most iza vas, baš u pravom trenutku. Možda ćete se sledećeg leta jednostavno držati biblioteke.