Figure: The house floats up in the sky by balloons. This picture is also used in 2018 KAIST RUN Spring Contest poster. In the year 2117, Professor Jaemin Yu developed a linear-time algorithm for TSP(Traveling Salesperson Problem). Not long after that…
http://codeforces.com/gym/101806/problem/T 题目 In the year 2117, Professor Jaemin Yu developed a linear-time algorithm for TSP(Traveling Salesperson Problem). Not long after that happened, all computer systems were destroyed, and nuclear weapons demol…
Description standard input/outputStatements Valera has only one electrical socket in his flat. He also has m devices which require electricity to work. He's got n plug multipliers to plug the devices, the i-th plug multiplier has ai sockets. A device…
Scarily interesting! 题目链接: http://acm.hust.edu.cn/vjudge/contest/126546#problem/D Description This year at Monsters University it is decided to arrange Scare Games. At the Games all campus gathers at the stadium stands, and the Scare program students…
一.多继承 上篇trait中,已经看到了其用法十分灵活,可以借此实现类似"多重继承"的效果,语法格式为: class/trait A extends B with C with D ... 之所以要给多重继承加一个引号,是因为这有约束条件的,上面的语法中,从左向右看,extends 后的B是A的基本类型,不管后面接多少个trait,如果C或D,本身又继承自其它class(上一篇讲过,trait也可以继承自class),则C或D的基类必须与B的基类保持一致,否则的话,JVM上的OOP世界…