450*450
0
0
450*450
1
0
450*450
2
0
450*450
3
0
450*450
0
0
450*450
2
0
450*450
1
0
450*450
0
0
450*450
3
0
450*450
0
0
450*450
0
0
450*450
0
0
450*450
0
0
450*450
0
0
450*450
3
0
450*450
0
0
450*450
0
0
450*450
1
0
450*450
0
0
450*450
1
0
450*450
1
0
450*450
1
0
450*450
0
0
709*450
0
0
752*752
1
0