摘要：
// 带飞网址 https://vjudge.net/article/187 专题七 线段树 √ HDU 1166 敌兵布阵√ HDU 1754 I Hate It√ POJ 3468 A Simple Problem with Integers√ POJ 2528 Mayor's posters√ 阅读全文
摘要：
// 参考博客 https://www.cnblogs.com/TheRoadToTheGold/p/6254255.html#4175712 阅读全文