Huawei OD Online OJ:
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Online OJ: brush the questions immediately
Question bank column: 2023 Huawei OD machine test (A volume + B volume) (C++JavaJSPy)
topic description
Usually use multi-line nodes and parent nodes to represent a tree, such as
Xi'an Shaanxi
Shaanxi China
Jiangxi China
China Asia
Thailand Asia
After entering a node, please print out all his lower nodes in the tree
enter description
Enter the number of lines in the first line, and the following are multiple lines of data. Each line uses a space to distinguish the node from the parent node
followed by the query node
output description
Output all lower nodes of the query node. Sort lexicographically
Remark
The nodes in the tree are unique, there will be no two nodes with the same name
ACM input and output mode
If you often use Leetcode , you will know that letcode does not need to write input and output functions. However, the Huawei OD machine test uses the ACM mode , which requires manual programming of input and output.
So it is best to familiarize yourself with this mode in advance on Niu-ke. For example, C++ uses cin/cout, python usesinput()/print()