문제
창영이는 크로스워드 퍼즐을 만드려고 한다.
두 단어 A와 B가 주어진다. A는 가로로 놓여야 하고, B는 세로로 놓어야 한다. 또, 두 단어는 서로 교차해야 한다. (정확히 한 글자를 공유해야 한다) 공유하는 글자는 A와 B에 동시에 포함되어 있는 글자여야 하고, 그런 글자가 여럿인 경우 A에서 제일 먼저 등장하는 글자를 선택한다. 마찬가지로 이 글자가 B에서도 여러 번 등장하면 B에서 제일 처음 나오는 것을 선택한다. 예를 들어, A = "ABBA"이고, B = "CCBB"라면, 아래와 같이 만들 수 있다.
.C..
.C..
ABBA
.B..
출력
A의 길이를 N, B의 길이를 M이라고 했을 때, 출력은 총 M줄이고, 각 줄에는 N개 문자가 있어야 한다. 문제 설명에 나온 것 같이 두 단어가 교차된 형태로 출력되어야 한다. 나머지 글자는 '.'로 출력한다.
예제 출력 1
복사
.P....
.I....
.D....
.Z....
BANANA
.M....
.A....
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ZXNjcmliZWQgYWJvdmUuIEFsbCBvdGhlciBjaGFyYWN0ZXJzIGluIHRoZSBncmlkIG11c3QgYmUgcGVyaW9kcyAodGhlIGNoYXJhY3RlciAmYmRxdW87Llx1MjAxZiwgd2l0aG91dCBxdW90ZXMpLCB0aHVzIHBhZGRpbmcgYWxsIGxpbmVzIHRvIHRoZSBsZW5ndGggb2YgTiBjaGFyYWN0ZXJzLjxcL3A+XHJcbiIsImhpbnQiOiIiLCJvcmlnaW5hbCI6IjEiLCJwcm9ibGVtX2xhbmdfY29kZSI6Ilx1YzYwMVx1YzViNCJ9XQ==
