The Preliminary Contest for ICPC Asia Nanjing 2019
传送门 参考资料: [1]:官方题解(提取码:w6ny) A.The beautiful values of the palace(思维+树状数组+扫描线) ...
传送门 参考资料: [1]:官方题解(提取码:w6ny) A.The beautiful values of the palace(思维+树状数组+扫描线) ...