如题，翻译题面中
BsB_sBs 是点集 {(i+0,5,0,5)∣i∈S}\{(i+0,5,0,5)|i\in S\}{(i+0,5,0,5)∣i∈S}
应为
BsB_sBs 是点集 {(i+0.5,0.5)∣i∈S}\{(i+0.5,0.5)|i\in S\}{(i+0.5,0.5)∣i∈S}
