Digital Identity

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. # About Speaker Luka Matijević is a researcher at the Mathematical Institute of the Serbian Academy of Sciences and Arts, whose work bridges academic research and freelance engineering. He's drawn to identifying the right algorithm for a given problem — and to the kind of careful optimization captured by one of his favourite Futurama lines: *"When you do things right, people won't be sure you've done anything at all."* ## 📅 Event Details | | | | --- | --- | | 👤 **Speaker** | **[Luka Matijević](https://www.linkedin.com/in/luka-matijevic/)** | | 🕕 **Date & Time** | **27th of May (Wednesday), 6 pm** | | 📍 **Location** | **Beograđanka, Vidikovac, 22nd floor** | | 🏢 **Address** | **Masarikova 5** | | 💻 **Online** | **[C++ Serbia YouTube](https://www.youtube.com/@cppserbia)** | See you!

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** Like it or not, AI agents are now capable of turning a quickly written paragraph of requirements into a pull request that is ready to be integrated into real-world production applications and it's now our responsibility to make sure AI doesn't go rogue and take down prod - or corrupt our data by misunderstanding the requirements or our existing schemas. In this session we'll explore strategies to protect our codebases through unit and integration testing, documentation, and code review along with additional ways of providing context and guard rails to our AI agents as they carry out the work we've assigned them to do. By the time we're done, you'll have a firm grasp of the problem and understand some helpful options for protecting your codebase from vibe coding mishaps getting YOLOed into prod. **YouTube Link** TBD

[https://www.originsgamefair.com/](https://www.originsgamefair.com/) [https://tabletop.events/conventions/origins-game-fair-2026](https://tabletop.events/conventions/origins-game-fair-2026) ### **Discover the Heart of Tabletop Gaming at Origins Game Fair** Celebrate over 50 years of gaming, community, and connection at Origins Game Fair 2026, June 17 to 21 in Columbus, Ohio! Since its inception in 1975, Origins has been the premier gathering for gamers, creators, and fans, offering something for everyone - from seasoned veterans to first-time attendees. Explore exciting events like board and card games, miniatures, roleplaying adventures, LARPs, collectible card games, cosplays, and more. Compete in game tournaments, test your skills in our puzzle competition, and immerse yourself in the Origins Film Festival. Plus, don't miss the massive exhibit hall, filled with the latest games, accessories, and collectibles from top publishers and indie creators alike. Whether you're here to play, learn, shop, or connect, Origins Game Fair offers a welcoming and inclusive atmosphere for all. Be a part of a community that has fostered friendships, sparked creativity, and built memories for five decades. Get your tickets today and experience the ultimate tabletop gaming event! ### **Important Dates** **Volunteer Applications Open:** November 28, 2025 - May 15, 2026 **Event Submission Open:** November 14th, 2025 - February 2, 2026 **Volunteer Shift Selection Opens:** February 3, 2025 **Late Event Submission Opens:** February 3, 2026 *There is no guarantee that any events submitted after February 2 will be reviewed or approved.* **Late Event Submission Closes:** April 5, 2026 **Perk Request Deadline:** April 10, 2026 **Layout Request Deadline:** April 15, 2026 **Event Registration Opens:** April 25, 2026 (1 PM EST) ### **Registration Hours:** **Self Serve - Scan and Go** Wednesday - 8am - Midnight Thursday - 7am - Midnight Friday - 7am - Midnight Saturday - 7am - Midnight Sunday - 7am - 2pm **Full Service / Materials Pickup** Wednesday - 8am - 9pm Thursday - 8am - 8pm Friday - 8am - 8pm Saturday - 8am - 6pm Sunday - 8am - 4pm **In 2026 you can go to Scan and Go for tickets purchased after you already have your badge just by scanning the barcode on your badge! Less waiting in line!** ### **Exhibit Hall Hours:** Wednesday - Closed Thursday - 9am - 10am - Premier Badge Holders Thursday - 10am - 6pm - All Attendees Friday - 10am - 6pm - All Attendees Saturday - 10am - 6pm - All Attendees Sunday - 10am - 4pm - All Attendees ### **Gaming Hall:** Wednesday - Noon - 1am Thursday - 8am - 1am Friday - 8am - 1am Saturday - 8am - 1am Sunday - 8am - 4pm ### **Important Information:** **Refunds:** There will be a 10% service fee for ALL Refunds; Badges and Tickets. **Badge Refund Deadline:**. April 15, 2026 No refunds on badges will be processed after this date. **Event Tickets:** \- will be refunded up to 24 hours before the event starts\. All event ticket refunds will have a 10% service fee\.

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)

Couldn't make Knowledge? Or want to debrief the dancing robots or Autonomous Workforce? Join us for a Knowledge '26 recap, insights sharing, a couple rounds of golf, and fun at Topgolf. As always, drinks and food will be provided. More details to come — mark your calendar, RSVP, and save your spot today!

We may pick a specific topic and post in advance or may discuss current events and various ad hoc topics . We would love to spend time hanging out and getting to know one another. Atheist, agnostics, other non-theists, and atheist-friendly people are welcome to join us. Note: COUNT operates a Facebook page at www.facebook.com/groups/COUNT.discussions (http://www.facebook.com/groups/COUNT.discussions/) to promote discussions among members and visitors.