BlackJack

Cartesian TreeTime Limit: 10000MS Memory Limit: 65536KTotal Submissions: 3893 Accepted: 1551Case Time Limit: 2000MSDescriptionLet us consider a special

PERIODNI - PeriodniLuka is bored in chemistry class so he is staring at a large periodic table of chemical elements hanging from a wall above the blackboard. To kill time, Luka decided to make his