代码来自2008年数学建模东北赛区B题，原题描述http://www.ivanblog.cn/post/18.html 思想是用粒子群算法来实现相关问题的求解，编程语言是Ｃ＋＋。-Mathematical modeling code from the 2008 Northeast Division B title, original title describes http://www.ivanblog.cn/post/18.html thinking is to achieve parti