焰

摘要： DQUERY - D-query Given a sequence of n numbers a1, a2, ..., an and a number of d-queries. A d-query is a pair (i, j) (1 ≤ i ≤ j ≤ n). For each d-query 阅读全文

摘要： F. New Year Snowflake F. New Year Snowflake As Gerald ..., in other words, on a New Year Eve Constantine prepared an unusual present for the Beautiful 阅读全文

该文被密码保护。 阅读全文

摘要： E. Porcelain E. Porcelain During her tantrums the princess usually smashes some collectable porcelain. Every furious shriek is accompanied with one it 阅读全文

摘要： D. Bag of mice D. Bag of mice The dragon and the princess are arguing about what to do on the New Year's Eve. The dragon suggests flying to the mounta 阅读全文

该文被密码保护。 阅读全文

摘要： E. Analysis of Pathes in Functional Graph E. Analysis of Pathes in Functional Graph You are given a functional graph. It is a directed graph, in which 阅读全文

摘要： Network Problem Description The ALPC company is now working on his own network system, which is connecting all N ALPC department. To economize on spen 阅读全文

摘要： Connections between cities Problem Description After World War X, a lot of cities have been seriously damaged, and we need to rebuild those cities. Ho 阅读全文

摘要： How far away ？ Problem Description There are n houses in the village and some bidirectional roads connecting them. Every day peole always like to ask 阅读全文