摘要： This time your job is to fill a sequence of N positive integers into a spiral matrix in non-increasing order. A spiral matrix is filled in from the fi 阅读全文

摘要： The following is from Max Howell @twitter: Google: 90% of our engineers use the software you wrote (Homebrew), but you can't invert a binary tree on a 阅读全文

摘要： Time limit : 2sec / Memory limit : 256MB Score : 300 points Problem Statement You are given two integer sequences of length N: a1,a2,..,aN and b1,b2,. 阅读全文

摘要： Time limit : 2sec / Memory limit : 256MB Score : 100 points Problem Statement You are given positive integers X and Y. If there exists a positive inte 阅读全文