Dwylkz

StarsTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 18171 Accepted: 7918DescriptionAstronomers often examine star maps where star

Binary-index-array + binary search and slight simulation. (of course seg-tree would be more effcient) For the simulation, I will record the current position(cp) and current direction(cd) of Holedox.