typedef struct ENode* PtrToENode;
struct ENode{
Vertex v1,v2;
WeightType Weight; // 权重
}
void InsertEdge(MGraph Graph,Edge E)
{
// 单向图只需插入一次
Graph->G[E->v1][E->v2]=E->Weight;
// 无向图需要插入两次
Graph->G[E->v2][E->v1]=E->Weight;
}