The Child and Polygon CodeForces - 437E(区间DP)

The Child and Polygon 题目连接:CodeForces - 437E node 题意:题目给出一个多边形,问有几种方案将其分割成多个三角形,且知足如下五点:c++ each vertex of each triangle is one of the polygon vertex; 三角形的每一个点都是多边形的顶点; each side of the polygon must b
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