摘要：
Summer is coming! It's time for Iahub and Iahubina to work out, as they both want to look hot at the beach. The gym where they go is a matrix a with n 阅读全文
摘要：
Furik and Rubik take part in a relay race. The race will be set up on a large square with the side of n meters. The given square is split into n × n c 阅读全文
摘要：
You are given an integer array of length nn. You have to choose some subsequence of this array of maximum length such that this subsequence forms a in 阅读全文
摘要：
Genos recently installed the game Zuma on his phone. In Zuma there exists a line of n gemstones, the i-th of which has color ci. The goal of the game 阅读全文