摘要： Broken NecklaceYou have a necklace of N red, white, or blue beads (3<=N<=350) some of which are red, others blue, and others white, arranged at random. Here are two examples for n=29: 1 2 1 2 r b b r b r r b r... 阅读全文

摘要： A. Dima and Friendstime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputDima and his friends have been playing hide and seek at Dima's place all night. As a result, Dima's place got messy. In the morning they decided that they need to clean th 阅读全文