“现在给你们15分钟商量你们的方案。15分钟以后,你们将被关进我刚才说的那个监狱,永远无法再交流。”! r' U# e; ? }5 A$ j2 O
5.39.217.776 z9 m; N& |9 i. o$ a* M9 D
利用这15分钟,让一个人收藏每个人一些物品(头发或其他)作为证据,过了一百天以上就交给国王。
my answer is just after they went back to their room, they made a mark on the door, so the last one who saw all the marks on every door, then he knows that everybody has been coming out.