红葉puzzles（PP3）: Yajilin001
(Published on 27. September 2020, 11:50 by cdwg2000)
Yajilin(Standard)
1. Draw a line to make a single loop.
2. Lines pass through the centers of cells, horizontally, vertically, or turning. The loop never crosses itself, branches off, or goes through the same cell twice.
3. The numbers show how many black cells there are in the direction of the arrow.
4. The loop does not pass through the black cells or the cells with numbers, and black cells cannot touch horizontally or vertically.
For more detailed rule legends, please refer to: https://www.nikoli.co.jp/en/puzzles/yajilin.html
Author: 红葉 (MOMIJI), from China, this question comes from his personal blog.
If you like this type of puzzle, you can go to this website to do more, https://www.janko.at/Raetsel/Yajilin/index.htm
Solution code: For each row from top to bottom the number of bends in the loop.
