关系矩阵
1 0 0 1 1 0 1
1 1 0 0 0 0 0
0 1 1 1 0 0 0
0 0 1 0 1 1 0
0 0 0 0 0 1 1
邻接矩阵
0 1 1 1 1
1 0 1 0 0
1 1 0 1 0
1 0 1 0 1
1 0 0 1 0