Https://acm. cs. nthu. edu. tw/problem/13144/ The website is the problem, and I need to implement the 13144.h(which is function. h in the 13144.cpp) to get the right answer.
Thanks for your help.

Match the feature to the network architecture. expensive to set up useful for a small organization easy to track files has a central server inexpensive to set up difficult to track files useful for a large organization does not have a central server client- server network peer-to-peer network