区域：约（$170$,$120$）至（$670$,$620$）

python代码：

import requests as r
from PIL import Image
from time import *

HEADERS={
    "user-agent":"Mozilla/5.0 (X11; Linux aarch64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36",
    "cookie":"%%%在此填写您的cookie·qwq"
}

def draw(x,y,c):
    ret=r.post(url="https://www.luogu.com.cn/paintBoard/paint",data="x={}&y={}&color={}".format(x,y,c),headers=HEADERS)
    return ret.text

def main():
    # cnt=0
    # cs=[]
    im = Image.open('img.jpg')
    rgb_im = im.convert('RGB')
    for i in range(500):
        for j in range(500):
            r, g, b = rgb_im.getpixel((i, j))
            if((r,g,b)>=(200,200,200)):
                print("white",i,j)
                print(draw(i+170,j+120,1))
                pass
            elif((r,g,b)>=(100,100,100) and (r,g,b)<(200,200,200)):
                print("gray-")
                print(draw(i+170,j+120,2))
                pass
            elif((r,g,b)>=(50,50,50) and (r,g,b)<(100,100,100)):
                print("gray+")
                print(draw(i+170,j+120,3))
                pass
            else:
                print("black")
                print(draw(i+170,j+120,0))
            sleep(30)
    # print(draw(0,0,0))
    # for i in range(1000)::
    #     for j in range(600):
    #         print(draw(i,j,0))
    #         sleep(30)

if __name__=='__main__':
    main()

img.jpg下载地址：https://cdn.luogu.com.cn/upload/image_hosting/34coepdb.png

感谢大佬支持qwq