练习情况P5058[ZJOI2004]嗅探器割点，从\(a\)开始\(Tarjan\)。对于割点\(u\)若\(b\)在\(u\)的子树中那么\(u\)为符合条件的割点。Code:P5058P3225[HNOI2012]矿场搭建SP16185BUSINESS-MiningyourownbusinessUVA1108MiningYourOwnBusiness求出点双