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Time Limit: 2000 ms
Memory Limit: 256 MB
Silver III
4
Author: Super Admin
회전 매칭
원형 기하
완전 탐색
입출력 예시
입력 1
7 0 10 15 25 40 50 60
출력 1
6
입력 2
4 0 90 180 270
출력 2
4