摘要：
There is a connected undirected graph with weights on its edges. It is guaranteed that each edge appears in at most one simple cycle. Assuming that th 阅读全文
摘要：
Samwell Tarly is learning to draw a magical matrix to protect himself from the White Walkers. the magical matrix is a matrix with n rows and m columns 阅读全文
摘要：
【BZOJ3622】已经没有什么好害怕的了 Description Input Output Sample Input 4 2 5 35 15 45 40 20 10 30 Sample Output 4 HINT 输入的2*n个数字保证全不相同。 输入的2*n个数字保证全不相同。 题意：给定a数组 阅读全文
摘要：
Recently, TeaTree acquire new knoledge gcd (Greatest Common Divisor), now she want to test you. As we know, TeaTree is a tree and her root is node 1, 阅读全文