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시간 제한: 10000ms메모리 제한: 1024MB출처: JPOI 2020 Stage 1BOJ 26766
예제
예제 1
입력
2
출력
@@@ @@@
@ @ @ @
@ @ @
@ @
@ @
@ @
@ @
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@
@@@ @@@
@ @ @ @
@ @ @
@ @
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