Toys and Models

Combinatorial optimization problems arise across logistics, scheduling, and engineering, and C++ remains a language of choice when performance matters. This lecture takes a practical look at solving such problems in C++, using the Electric Vehicle Routing Problem as a running example. We begin with an exact solver, formulating the problem as a mixed-integer program and trying to solve it through GLPK's C API directly from C++. Exact methods, however, quickly hit their limits on real-world instances. The second half of the talk turns to metaheuristics: how they are designed, why C++ is particularly well suited for implementing them, and what design choices matter most in practice. We'll walk through a concrete implementation, touching on data structures for fast neighborhood evaluation, generic algorithm design with templates, and the performance considerations that separate a prototype from a production-ready solver. The goal is not to advocate for one approach over another, but to show how C++ supports the full spectrum of optimization techniques.

Combinatorial optimization problems arise across logistics, scheduling, and engineering, and C++ remains a language of choice when performance matters. This lecture takes a practical look at solving such problems in C++, using the Electric Vehicle Routing Problem as a running example. We begin with an exact solver, formulating the problem as a mixed-integer program and trying to solve it through GLPK's C API directly from C++. Exact methods, however, quickly hit their limits on real-world instances. The second half of the talk turns to metaheuristics: how they are designed, why C++ is particularly well suited for implementing them, and what design choices matter most in practice. We'll walk through a concrete implementation, touching on data structures for fast neighborhood evaluation, generic algorithm design with templates, and the performance considerations that separate a prototype from a production-ready solver. The goal is not to advocate for one approach over another, but to show how C++ supports the full spectrum of optimization techniques.

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!

Boardgaming and boardgaming and MORE boardgaming .... we have over 2000 games onsite to play Join us !!!

REGISTER HERE: [SIGN UP TODAY](https://link.elitereimm.com/widget/form/mUCJcb9LFDGoPqRg82jP?am_id=debbie4540) Should a real estate investor get a real estate license? Sometimes it’s a massive advantage… and sometimes it can complicate your business if you don’t know what you’re walking into. In this training, we’ll cut through the “agents vs investors” drama and focus on one thing: **what makes you more money and gives you more leverage**. You’ll learn: * **When being licensed helps investors win** (better access, better data, better terms, better deal flow) * How investors use a license to **create extra profit centers** (commissions, referrals, listings, buyer rep, property management pathways) * The truth about **MLS access, pocket listings, and being first to the good deals** * How licensing impacts **wholesaling, double-closing, assignments, and disclosures** * What brokerages don’t tell you: **fees, splits, compliance, and time requirements** * When it’s smarter to **partner with an agent** instead of becoming one * A simple decision framework: **licensed vs partnered vs hybrid model** You’ll walk out knowing whether licensing fits your goals—and if it does, the cleanest path to do it without slowing down your investing. REGISTER HERE: [SIGN UP TODAY](https://link.elitereimm.com/widget/form/mUCJcb9LFDGoPqRg82jP?am_id=debbie4540)

🚗 **Only about 20 minutes from floating down the river!** This is one of those events you’ll be glad you showed up for. Especially since it **may be one of the last** cookout bonfire party that is held. Cookout, potluck, racing, camping, bonfire, music, games, and late-night hangs — all in one night. Com**e for a few hours or stay** for the whole thing. ## 🍔 Cookout + Potluck — 4:30 PM We’ll be hanging out, grilling, eating, drinking, and socializing before the races start. Please bring something to share **USE "SIGN UP"** so we don’t end up with 14 bags of chips and 9 packs of cookies 😅 **What to bring:** * Chair, BYOB — no glass inside the racetrack, Water or youself even if you leave it in the car, **$15 cash to support the venue** by watching some of the race * Something for the potluck USE **"SIGN UP"** We’ll have a grill and a **generator** available for crockpots, Instant Pots, etc. ## 🏁 Racing Starts — 7:00 PM After the cookout, we’ll head into the stands for the races. Not really into racing? Come for the drinks, stay for the wrecks 🍻 This night includes Late Models, Thunder Cars, Compacts, and a wet & wild Enduro race. Be sure to bring **water balloons to fill up and** throw during the final race 💦🎯 Please support the venue by checking out some of the racing. 💵 **$15 cash will be collected during the cookout.** Please bring exact change or a $20. ## 🏕️ Free Camping — June 5 & 6 Camping is free both nights. No tent? No problem. You can crash **in your car under the stars.** There will be a bonfire, music, games, and late-night hanging out. Please be responsible: **do not drink and drive.** ## 🎯 Other Stuff Happening * Karaoke, Beer pong, Cornhole, Bonfire, Music, Late-night hangout Have a favorite karaoke song? Let me know. ## Important Notes 📸 Photos/videos may be taken and shared on this or other platforms. ⚠️ This is a volunteer-led event. You participate at your own risk. 📵 Cell signal may be spotty, so ask questions ahead of time if needed. Stay for a bit or go all in — just don’t miss this one. **Stop scrolling. Start doing stuff.**

Dodgeball is back again! If you’ve been wanting to come out, this is an easy one to join. We’ll be playing for about 1.5 to 2 hours, you do not need to bring any equipment, and no experience is needed. We use a specific set of rules and equipment to make the games run better and keep them fun for everybody, not just people who already know how to play. If it rains, the event will be canceled.