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트리의 지름
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Time Limit: 2000 ms
Memory Limit: 256 MB
Gold III
5.5
Author: Super Admin
그래프
BFS
트리
예제 입력 1
5 1 2 3 2 3 4 3 4 2 3 5 6
그래프 경로 존재 여부
Silver III
4