计蒜客：Entertainment Box
Ada, Bertrand and Charles often argue over which TV shows to watch, and to avoid some of their fights they have finally decided to buy a video tape recorder. This fabulous, new device can record k k different TV shows simultaneously, and whenever a show recorded in one the machine's k k slots ends, the machine is immediately ready to record another show in the same slot. The three friends wonder how many TV shows they can record during one day. They provide you with the TV guide for today's shows, and tell you the number of shows the machine can record simultaneously. How many shows can they