摘要：
D. Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths time limit per test 3 seconds memory limit per test 256 megabytes input standard input o 阅读全文
摘要：
E. Lomsat gelral time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given a rooted 阅读全文
摘要：
E. Team Work time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You have a team of N people 阅读全文
摘要：
D. Tree time limit per test 2 seconds memory limit per test 512 megabytes input standard input output standard output You are given a node of the tree 阅读全文
摘要：
C. Permutation Cycle time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output For a permutation P 阅读全文
摘要：
B. Recursive Queries time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output B. Recursive Querie 阅读全文
摘要：
A. Palindromic Supersequence time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are giv 阅读全文