Yajikabe

Yajikabe was invented by Naoki Inaba, who combined the Yajilin and Nurikabe puzzles together. The goal is to change certain cells of the grid according to the following rules to form a complete colored area:

Cells with numbers cannot perform any operations
All colored cells can form a continuous and uninterrupted whole
Square areas with no connections in the grid
Cells containing numbers and arrows indicate how many colored cells are in the row or column pointed to by the arrow.

Ability to solve problems:
The arrow with a number of 0 must point in the direction without a black grid
It is easier to achieve success by pointing the arrow with a large number first