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| ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
|---|---|---|---|---|---|---|---|---|---|
| #97448 | #3614. Math Trade | shushu | Compile Error | / | / | Python2 | 562b | 2023-04-16 20:21:00 | 2023-04-16 20:21:04 |
Judging History
This is the latest submission verdict.
- [2023-08-10 23:21:45]
- System Update: QOJ starts to keep a history of the judgings of all the submissions.
- [2023-04-16 20:21:04]
- Judged
- Verdict: Compile Error
- Time: 0ms
- Memory: 0kb
- [2023-04-16 20:21:00]
- Submitted
answer
n = int(input())
graph = {}
# Build the graph
for i in range(n):
name, has, wants = input().split()
graph[name] = wants
# Find the longest path
def dfs(node, visited):
visited.add(node)
if node not in graph:
return 0
next_node = graph[node]
if next_node in visited:
return 0
return 1 + dfs(next_node, visited)
max_length = 0
for start_node in graph.keys():
visited = set()
length = dfs(start_node, visited)
max_length = max(max_length, length)
if max_length == 0:
print("No trades possible")
else:
print(max_length)
詳細信息
Sorry: IndentationError: expected an indented block (answer.code, line 6)