from AtCoder Library Practice Contest ACLPC_D D - Maxflow
- When squares are painted in a checkerboard pattern, tiles always step on one square of a different color.
- That is, a tile is an edge of a two-part graph, and the maximum number of tiles is Maximum two-part matching.
- This can be attributed to the maximum flow
This page is auto-translated from [/nishio/ACLPC D](https://scrapbox.io/nishio/ACLPC D) using DeepL. If you looks something interesting but the auto-translated English is not good enough to understand it, feel free to let me know at @nishio_en. I’m very happy to spread my thought to non-Japanese readers.