新月

Time Limit: 3000MS Memory Limit: 65536KTotal Submissions: 3761 Accepted: 1268DescriptionThere are N cities in a country, and there is one and only one simple path between e

Famil Door’s City map looks like a tree (undirected connected acyclic graph) so other people call it Treeland. There are n intersections in the city connected by n - 1 bidirectional roads.There

DescriptionMirko is playing with stacks. In the beginning of the game, he has an empty stack denoted with number 0. In theith step of the game he will choose an existing stack denoted with v, co