문제
빙고 게임에서 호스트는 숫자를 읽고, 각 플레이어는 자신의 빙고판에서 그 숫자를 찾는다.
각 플레이어는 1부터 N2까지 숫자가 N행 N열에 적혀있는 판를 들고 있다.
호스트가 숫자를 읽으면, 플레이어는 호스트가 부른 최근 N개의 숫자가 모두 있는 행이 있는지 찾는다. 이때, 그 행에 쓰여 있는 숫자의 순서가 호스트가 숫자를 부른 순서가 같아야 한다. 이런 행을 찾을때마다 플레이어는 1점을 얻는다.
예를 들어, N이 3일때, 플레이어가 다음과 같은 빙고판을 들고있다고 생각해보자.
동혁이는 매일 빙고게임에서 꼴등을 한다. 오늘만은 일등을 하겠다고 다짐한 동혁이는 호스트가 부를 숫자의 순서가 적혀있는 종이를 훔쳐왔다. 이때, 빙고판의 숫자를 적절히 배치했을 때, 얻을 수 있는 최대 점수는 몇인지를 구하는 프로그램을 작성하시오.
출력
첫째 줄에 얻을 수 있는 최대 점수는 몇 점인지 출력한다.
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
