Worfzyq likes Permutation problems.Caoshen and Mengjuju are expert at these problems . They have n cards,and all of the numbers vi on these cards are different . Because Caoshen doesn't like disordered permutations,he wants to change the permutation …
题目描述 In the computer network, a Router is a device which finds an optimal way to transmit the datagrams passing through it to it's destination efficiently. To accomplish this task, the Router maintains a Routing Table. The Routing Table stores a vari…
题目描述 Nowadays, "Circle of Friends" is a very popular social networking platform in WeChat. We can share our life to friends through it or get other's situation. Similarly, in real life, there is also a circle of friends, friends would often get…
1222: Sweep the snow 时间限制: 1 Sec 内存限制: 128 MB 提交: 28 解决: 18 [提交][状态][讨论版] 题目描述 After the big big snow yesterday, NEU became a beautiful silver world.In the morning, poor michaelalan got a short message which told him to sweep the whole school snow…