TOIP 202205-b3 垂直對稱 (Symmetry).pdf
3 0 0 3 4 -3 -4
failure
5 0 0 3 -2 3 2 -5 4 -5 -4
success
4 0 0 1 0 2 0 3 0
1 -1000 -1000
3 2 1000 2 501 2 -1000