{"first_seen":"2026-10-02T23:02:36Z","headline":"Vietnamese professor cracks 55-year-old math puzzle, inspired by juggling","kind":"front-page-headline","rank":1,"source":"vnexpress","url":"https://e.vnexpress.net/news/news/education/vietnamese-professor-cracks-55-year-old-math-puzzle-inspired-by-juggling-5127532.html","v":1}