[问答题]
A postman starts at the Post Office located a hjy)-mi zd65hbhq(a l:t k8 s7p,)f8mcsl;mvt O and needs to travel along every road illustrated by the edges in the graph below. The numbers on the graph represent distances in kilometres 7fm( acl8lb;vm s),pthk:8 qs of the roads.
1. Find a solution to the Chinese Postman Problem for the graph.
2. Write down the length, in kilometres, of an optimal Chinese postman route.
