Adding some problems

2024/day23/problem

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+[1]Advent of Code
+
+--- Day 23: LAN Party ---
+
+   As The Historians wander around a secure area at Easter Bunny HQ, you come
+   across posters for a [16]LAN party scheduled for today! Maybe you can find
+   it; you connect to a nearby [17]datalink port and download a map of the
+   local network (your puzzle input).
+
+   The network map provides a list of every connection between two computers.
+   For example:
+
+ kh-tc
+ qp-kh
+ de-cg
+ ka-co
+ yn-aq
+ qp-ub
+ cg-tb
+ vc-aq
+ tb-ka
+ wh-tc
+ yn-cg
+ kh-ub
+ ta-co
+ de-co
+ tc-td
+ tb-wq
+ wh-td
+ ta-ka
+ td-qp
+ aq-cg
+ wq-ub
+ ub-vc
+ de-ta
+ wq-aq
+ wq-vc
+ wh-yn
+ ka-de
+ kh-ta
+ co-tc
+ wh-qp
+ tb-vc
+ td-yn
+
+   Each line of text in the network map represents a single connection; the
+   line kh-tc represents a connection between the computer named kh and the
+   computer named tc. Connections aren't directional; tc-kh would mean
+   exactly the same thing.
+
+   LAN parties typically involve multiplayer games, so maybe you can locate
+   it by finding groups of connected computers. Start by looking for sets of
+   three computers where each computer in the set is connected to the other
+   two computers.
+
+   In this example, there are 12 such sets of three inter-connected
+   computers:
+
+ aq,cg,yn
+ aq,vc,wq
+ co,de,ka
+ co,de,ta
+ co,ka,ta
+ de,ka,ta
+ kh,qp,ub
+ qp,td,wh
+ tb,vc,wq
+ tc,td,wh
+ td,wh,yn
+ ub,vc,wq
+
+   If the Chief Historian is here, and he's at the LAN party, it would be
+   best to know that right away. You're pretty sure his computer's name
+   starts with t, so consider only sets of three computers where at least one
+   computer's name starts with t. That narrows the list down to 7 sets of
+   three inter-connected computers:
+
+ co,de,ta
+ co,ka,ta
+ de,ka,ta
+ qp,td,wh
+ tb,vc,wq
+ tc,td,wh
+ td,wh,yn
+
+   Find all the sets of three inter-connected computers. How many contain at
+   least one computer with a name that starts with t?
+
+   Your puzzle answer was 1485.
+
+--- Part Two ---
+
+   There are still way too many results to go through them all. You'll have
+   to find the LAN party another way and go there yourself.
+
+   Since it doesn't seem like any employees are around, you figure they must
+   all be at the LAN party. If that's true, the LAN party will be the largest
+   set of computers that are all connected to each other. That is, for each
+   computer at the LAN party, that computer will have a connection to every
+   other computer at the LAN party.
+
+   In the above example, the largest set of computers that are all connected
+   to each other is made up of co, de, ka, and ta. Each computer in this set
+   has a connection to every other computer in the set:
+
+ ka-co
+ ta-co
+ de-co
+ ta-ka
+ de-ta
+ ka-de
+
+   The LAN party posters say that the password to get into the LAN party is
+   the name of every computer at the LAN party, sorted alphabetically, then
+   joined together with commas. (The people running the LAN party are clearly
+   a bunch of nerds.) In this example, the password would be co,de,ka,ta.
+
+   What is the password to get into the LAN party?
+
+   Your puzzle answer was cc,dz,ea,hj,if,it,kf,qo,sk,ug,ut,uv,wh.
+
+   Both parts of this puzzle are complete! They provide two gold stars: **
+
+   At this point, you should [18]return to your Advent calendar and try
+   another puzzle.
+
+   If you still want to see it, you can [19]get your puzzle input.
+
+References
+
+   Visible links
+   1. https://adventofcode.com/
+   2. https://adventofcode.com/2024/about
+   3. https://adventofcode.com/2024/events
+   4. https://cottonbureau.com/people/advent-of-code
+   5. https://adventofcode.com/2024/settings
+   6. https://adventofcode.com/2024/auth/logout
+   7. Advent of Code Supporter
+	https://adventofcode.com/2024/support
+   8. https://adventofcode.com/2024
+   9. https://adventofcode.com/2024
+  10. https://adventofcode.com/2024/support
+  11. https://adventofcode.com/2024/sponsors
+  12. https://adventofcode.com/2024/leaderboard
+  13. https://adventofcode.com/2024/stats
+  14. https://adventofcode.com/2024/sponsors
+  16. https://en.wikipedia.org/wiki/LAN_party
+  17. https://adventofcode.com/2016/day/9
+  18. https://adventofcode.com/2024
+  19. https://adventofcode.com/2024/day/23/input