Your team at amazon is overseeing the design of a new high-efficiency data center at HQ2. A power grid need to be generated for supplying power to N servers. All servers in the grid have to be connected such that they have access to power. The cost of connections between different servers varies. Assume that there are no ties, names of servers are unique, connections are directionless, there is at most one connection between a pair of servers, all costs are greater than zero, and a server does not connect to itself. Write an algorithm to minimize the cost of connecting all servers in the power grid. Input two arguments - num, an Integer representing number of connections. connectons, representing a list of connections where each element of the list consists of two servers and the cost of connection between the servers. Note The cost of connection between the servers is always greater than 0.

we can all learn from our past mistakes because we all have different ways of learning different types of techniques. my way may or may not another classmate remember and have the repetition to acknowledge such standard. such as remembering acronyms. using abbreviations to us remember keep things in order in our memory. this us figure out what comes next in the sequence. if so, what we have is a sentence of just letters all in caps. we either know the meaning or have no idea what it stands for. most of the time we know the meaning and context. but most of us who don't know, should learn by having a quick glance at what needs to be remembered. such as repetition in the memory for acronyms. one way that me, is the fact that i'm always doing math and english assignments. so we have to remember specific meanings such as soapstone for documents, such as citing correctly. or pemdas for doing the equations correctly, even if it's the super long way. this works for everyone. you just have to find what works for you by practicing and repetition daily.