随机给出n*n的邻接矩阵，并打印出邻接矩阵，边的个数，回路的个数和每个顶点的度，并判断该图中是否存在Euler回路。-Random given the n* n adjacency matrix and adjacency matrix print, while the number, loop number and the degree of each vertex, and determine the existence of the map Euler circuit.