According to the suggestion of @白霜心 @QEMWCEZ, the data stored in the greedy snake queue is changed from the ten digit coordinate to the two digit direction, and the queue area is reduced by more than half (because there is an extra space, we are considering adding online function).
From 20456 logic gates to 11376 logic gates, reducing 9080 logic gates; from 362 × 393 to 250 × 392, reducing 112 grids horizontally and 1 grid vertically. ‍