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7662번 이중 우선순위 큐
문제 보러가기
🅰 설계
1) 첫 번째 방법
2) 두 번째 방법
q.firstkey()
: q에서 맨 앞에 있는 값q.lastkey()
: q에서 맨 뒤에 있는 값✅ 후기