匹配问题算法！有8个犯人，为防止他们串供，必须把有牵连的犯人互相隔离，问至少需要几个关押室，给出计算方法与程序。-Matching Algorithm! There are eight prisoners, in order to prevent them from collusion must be involved with each other segregation of prisoners, and asked at least a few holding cells, given the calculation methods and procedures.