시간 제한 메모리 제한 제출 정답 맞은 사람 정답 비율
1 초 (하단 참고) 256 MB 135 36 16 32.653%

문제

영어 알파벳 대문자로만 구성된 문자열이 N개 있다 (S[1], S[2], ..., S[N] 이라 칭하자).

Reverse(T)는 임의의 문자열 T를 뒤집은 문자열 이라 하자 (명백히, 모든 문자열 T에 대해 Reverse(Reverse(T)) = T 이다). 

가령 Reverse("ABC") = "CBA" 이다.

당신은 N개의 문자열 각각에 Reverse() 함수를 적용할지 말지 고를 수 있고, 이를 통해 문자열이 사전순으로 정렬되도록 하고 싶다 (문자열이 N개 이므로 2N 가지의 방법이 존재한다).

각 문자열에 Reverse() 함수를 적용한 경우를 '1' 적용하지 않은 경우를 '0'으로 나타내면, 길이가 N인 0-1문자열이 된다 - 이를 "리버스 문자열" 이라 하자. (리버스 문자열은 길이가 N인 0-1 문자열이다).

예를 들어 N = 3이고 S[1] = "ABC", S[2] = "XC", S[3] = "DZ" 라 하자.

  • 리버스 문자열이 "000"인 경우: 세 문자열은 원래 문자열인 "ABC", "XC", "DZ" 가 되고 사전순으로 정렬되지 않은 상태이다 (S[3]이 S[2]보다 앞선다).
  • 리버스 문자열이 "001"인 경우: 3번 문자열에만 Reverse() 함수를 적용하면 세 문자열은 "ABC", "XC", "ZD" 가 되어 사전순으로 정렬된다.
  • 리버스 문자열이 "010"인 경우: 2번 문자열에만 Reverse() 함수를 적용하면 세 문자열은 "ABC", "CX", "DZ"가 되어 사전순으로 정렬된다.
  • 리버스 문자열이 "101"인 경우: 1번과 3번 문자열에 Reverse() 함수를 적용하면 "CBA", "XC", "ZD"가 되어 사전순으로 정렬된다.

이 외에도 다른 방법으로 세 문자열을 사전순으로 정렬할 수 있다.

입력으로 주어진 N개의 문자열을 사전순으로 정렬하는 리버스 문자열이 항상 존재한다는 가정하에, 그러한 리버스 문자열 중 사전순으로 가장 앞서는 리버스 문자열을 출력하시오.

입력

첫 줄에 테스트 케이스의 수 T가 주어진다.

테스트 케이스의 첫 줄에 문자열의 수 N이 주어진다.

다음 N줄에 걸쳐 한 줄에 하나씩 영문 알파벳 대문자로만 구성된 문자열이 주어진다.

출력

각 테스트 케이스에 대해 조건을 만족하는 리버스 문자열 중 사전순으로 가장 앞서는 리버스 문자열을 출력한다.

제한

  • 1 ≤ T ≤ 50
  • 2 ≤ N ≤ 150
  • 2 ≤ Length (S[i]) ≤ 20
  • 임의의 i ≠ j 에 대하여 Reverse(S[i]) ≠ S[j] 와 S[i] ≠ S[j] 는 항상 성립한다.
  • 입력으로 주어지는 모든 케이스에 대해, 주어진 문자열을 사전순으로 정렬하는 리버스 문자열은 항상 존재한다.

예제 입력 1

2
3
ABC
ABD
XY
3
ABC
XC
DZ

예제 출력 1

000
001

힌트

사전식 순서: 두 문자열 S, T가 주어졌을 때 S가 T의 prefix 이거나 혹은 S와 T를 비교했을 때 처음으로 다른 문자 (알파벳)가 각각 s, t인 경우 s가 t보다 사전순으로 앞서는 경우 S가 T보다 사전순으로 앞선다고 한다.

[{"problem_id":"19597","problem_lang":"0","title":"\ubb38\uc790\uc5f4 \ub4a4\uc9d1\uae30","description":"<p>\uc601\uc5b4 \uc54c\ud30c\ubcb3 \ub300\ubb38\uc790\ub85c\ub9cc \uad6c\uc131\ub41c \ubb38\uc790\uc5f4\uc774 N\uac1c \uc788\ub2e4 (S[1], S[2], ..., S[N] \uc774\ub77c \uce6d\ud558\uc790).<\/p>\r\n\r\n<p>Reverse(T)\ub294 \uc784\uc758\uc758 \ubb38\uc790\uc5f4 T\ub97c \ub4a4\uc9d1\uc740&nbsp;\ubb38\uc790\uc5f4 \uc774\ub77c \ud558\uc790 (\uba85\ubc31\ud788, \ubaa8\ub4e0 \ubb38\uc790\uc5f4 T\uc5d0 \ub300\ud574 Reverse(Reverse(T)) = T&nbsp;\uc774\ub2e4).&nbsp;<\/p>\r\n\r\n<p>\uac00\ub839 Reverse(&quot;ABC&quot;) = &quot;CBA&quot; \uc774\ub2e4.<\/p>\r\n\r\n<p>\ub2f9\uc2e0\uc740 N\uac1c\uc758 \ubb38\uc790\uc5f4 \uac01\uac01\uc5d0 Reverse() \ud568\uc218\ub97c \uc801\uc6a9\ud560\uc9c0 \ub9d0\uc9c0 \uace0\ub97c \uc218 \uc788\uace0, \uc774\ub97c \ud1b5\ud574 \ubb38\uc790\uc5f4\uc774 \uc0ac\uc804\uc21c\uc73c\ub85c \uc815\ub82c\ub418\ub3c4\ub85d \ud558\uace0 \uc2f6\ub2e4 (\ubb38\uc790\uc5f4\uc774 N\uac1c \uc774\ubbc0\ub85c 2<sup>N<\/sup> \uac00\uc9c0\uc758 \ubc29\ubc95\uc774 \uc874\uc7ac\ud55c\ub2e4).<\/p>\r\n\r\n<p>\uac01 \ubb38\uc790\uc5f4\uc5d0 Reverse() \ud568\uc218\ub97c \uc801\uc6a9\ud55c \uacbd\uc6b0\ub97c &#39;1&#39; \uc801\uc6a9\ud558\uc9c0 \uc54a\uc740 \uacbd\uc6b0\ub97c &#39;0&#39;\uc73c\ub85c \ub098\ud0c0\ub0b4\uba74, \uae38\uc774\uac00 N\uc778 0-1\ubb38\uc790\uc5f4\uc774 \ub41c\ub2e4 - \uc774\ub97c &quot;\ub9ac\ubc84\uc2a4 \ubb38\uc790\uc5f4&quot; \uc774\ub77c \ud558\uc790. (\ub9ac\ubc84\uc2a4 \ubb38\uc790\uc5f4\uc740 \uae38\uc774\uac00 N\uc778 0-1 \ubb38\uc790\uc5f4\uc774\ub2e4).<\/p>\r\n\r\n<p>\uc608\ub97c \ub4e4\uc5b4 N = 3\uc774\uace0 S[1] = &quot;ABC&quot;, S[2] = &quot;XC&quot;, S[3] = &quot;DZ&quot; \ub77c \ud558\uc790.<\/p>\r\n\r\n<ul>\r\n\t<li>\ub9ac\ubc84\uc2a4 \ubb38\uc790\uc5f4\uc774 &quot;000&quot;\uc778 \uacbd\uc6b0: \uc138 \ubb38\uc790\uc5f4\uc740 \uc6d0\ub798 \ubb38\uc790\uc5f4\uc778 &quot;ABC&quot;, &quot;XC&quot;, &quot;DZ&quot; \uac00 \ub418\uace0 \uc0ac\uc804\uc21c\uc73c\ub85c \uc815\ub82c\ub418\uc9c0 \uc54a\uc740 \uc0c1\ud0dc\uc774\ub2e4 (S[3]\uc774 S[2]\ubcf4\ub2e4 \uc55e\uc120\ub2e4).<\/li>\r\n\t<li>\ub9ac\ubc84\uc2a4 \ubb38\uc790\uc5f4\uc774 &quot;001&quot;\uc778 \uacbd\uc6b0: 3\ubc88 \ubb38\uc790\uc5f4\uc5d0\ub9cc Reverse() \ud568\uc218\ub97c \uc801\uc6a9\ud558\uba74 \uc138 \ubb38\uc790\uc5f4\uc740 &quot;ABC&quot;, &quot;XC&quot;, &quot;ZD&quot; \uac00 \ub418\uc5b4 \uc0ac\uc804\uc21c\uc73c\ub85c \uc815\ub82c\ub41c\ub2e4.<\/li>\r\n\t<li>\ub9ac\ubc84\uc2a4 \ubb38\uc790\uc5f4\uc774 &quot;010&quot;\uc778 \uacbd\uc6b0: 2\ubc88 \ubb38\uc790\uc5f4\uc5d0\ub9cc Reverse() \ud568\uc218\ub97c \uc801\uc6a9\ud558\uba74 \uc138 \ubb38\uc790\uc5f4\uc740 &quot;ABC&quot;, &quot;CX&quot;, &quot;DZ&quot;\uac00 \ub418\uc5b4 \uc0ac\uc804\uc21c\uc73c\ub85c \uc815\ub82c\ub41c\ub2e4.<\/li>\r\n\t<li>\ub9ac\ubc84\uc2a4 \ubb38\uc790\uc5f4\uc774 &quot;101&quot;\uc778 \uacbd\uc6b0:&nbsp;1\ubc88\uacfc 3\ubc88 \ubb38\uc790\uc5f4\uc5d0 Reverse() \ud568\uc218\ub97c \uc801\uc6a9\ud558\uba74 &quot;CBA&quot;, &quot;XC&quot;, &quot;ZD&quot;\uac00 \ub418\uc5b4 \uc0ac\uc804\uc21c\uc73c\ub85c \uc815\ub82c\ub41c\ub2e4.<\/li>\r\n<\/ul>\r\n\r\n<p>\uc774 \uc678\uc5d0\ub3c4 \ub2e4\ub978 \ubc29\ubc95\uc73c\ub85c \uc138 \ubb38\uc790\uc5f4\uc744 \uc0ac\uc804\uc21c\uc73c\ub85c \uc815\ub82c\ud560 \uc218 \uc788\ub2e4.<\/p>\r\n\r\n<p>\uc785\ub825\uc73c\ub85c \uc8fc\uc5b4\uc9c4 N\uac1c\uc758 \ubb38\uc790\uc5f4\uc744 \uc0ac\uc804\uc21c\uc73c\ub85c \uc815\ub82c\ud558\ub294 \ub9ac\ubc84\uc2a4 \ubb38\uc790\uc5f4\uc774 \ud56d\uc0c1 \uc874\uc7ac\ud55c\ub2e4\ub294 \uac00\uc815\ud558\uc5d0, \uadf8\ub7ec\ud55c \ub9ac\ubc84\uc2a4 \ubb38\uc790\uc5f4 \uc911 \uc0ac\uc804\uc21c\uc73c\ub85c \uac00\uc7a5 \uc55e\uc11c\ub294 \ub9ac\ubc84\uc2a4 \ubb38\uc790\uc5f4\uc744 \ucd9c\ub825\ud558\uc2dc\uc624.<\/p>\r\n","input":"<p>\uccab \uc904\uc5d0 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uc218 T\uac00 \uc8fc\uc5b4\uc9c4\ub2e4.<\/p>\r\n\r\n<p>\ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uccab \uc904\uc5d0 \ubb38\uc790\uc5f4\uc758 \uc218 N\uc774 \uc8fc\uc5b4\uc9c4\ub2e4.<\/p>\r\n\r\n<p>\ub2e4\uc74c N\uc904\uc5d0 \uac78\uccd0 \ud55c \uc904\uc5d0 \ud558\ub098\uc529 \uc601\ubb38 \uc54c\ud30c\ubcb3 \ub300\ubb38\uc790\ub85c\ub9cc \uad6c\uc131\ub41c \ubb38\uc790\uc5f4\uc774 \uc8fc\uc5b4\uc9c4\ub2e4.<\/p>\r\n","output":"<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc5d0 \ub300\ud574 \uc870\uac74\uc744 \ub9cc\uc871\ud558\ub294 \ub9ac\ubc84\uc2a4 \ubb38\uc790\uc5f4 \uc911 \uc0ac\uc804\uc21c\uc73c\ub85c \uac00\uc7a5 \uc55e\uc11c\ub294 \ub9ac\ubc84\uc2a4 \ubb38\uc790\uc5f4\uc744 \ucd9c\ub825\ud55c\ub2e4.<\/p>\r\n","hint":"<p>\uc0ac\uc804\uc2dd \uc21c\uc11c: \ub450 \ubb38\uc790\uc5f4 S, T\uac00 \uc8fc\uc5b4\uc84c\uc744 \ub54c S\uac00 T\uc758 prefix \uc774\uac70\ub098 \ud639\uc740 S\uc640 T\ub97c \ube44\uad50\ud588\uc744 \ub54c \ucc98\uc74c\uc73c\ub85c \ub2e4\ub978 \ubb38\uc790 (\uc54c\ud30c\ubcb3)\uac00 \uac01\uac01 s, t\uc778 \uacbd\uc6b0 s\uac00 t\ubcf4\ub2e4 \uc0ac\uc804\uc21c\uc73c\ub85c \uc55e\uc11c\ub294 \uacbd\uc6b0 S\uac00 T\ubcf4\ub2e4 \uc0ac\uc804\uc21c\uc73c\ub85c \uc55e\uc120\ub2e4\uace0 \ud55c\ub2e4.<\/p>\r\n","original":"1","html_title":"0","problem_lang_tcode":"Korean","limit":"<ul>\r\n\t<li>1 &le; T &le; 50<\/li>\r\n\t<li>2 &le; N &le; 150<\/li>\r\n\t<li>2 &le; Length (S[i]) &le; 20<\/li>\r\n\t<li>\uc784\uc758\uc758 i &ne; j \uc5d0 \ub300\ud558\uc5ec Reverse(S[i]) &ne; S[j] \uc640 S[i] &ne; S[j] \ub294 \ud56d\uc0c1 \uc131\ub9bd\ud55c\ub2e4.<\/li>\r\n\t<li>\uc785\ub825\uc73c\ub85c \uc8fc\uc5b4\uc9c0\ub294 \ubaa8\ub4e0 \ucf00\uc774\uc2a4\uc5d0 \ub300\ud574, \uc8fc\uc5b4\uc9c4 \ubb38\uc790\uc5f4\uc744 \uc0ac\uc804\uc21c\uc73c\ub85c \uc815\ub82c\ud558\ub294 \ub9ac\ubc84\uc2a4 \ubb38\uc790\uc5f4\uc740 \ud56d\uc0c1 \uc874\uc7ac\ud55c\ub2e4.<\/li>\r\n<\/ul>\r\n"},{"problem_id":"19597","problem_lang":"1","title":"String Reversal","description":"<p>There are N strings that consist only of uppercase English alphabets (denote these strings as S[1], S[2], ..., S[N]).<\/p>\r\n\r\n<p>Reverse(T) is defined as the reversed string of an arbitrary&nbsp;string, T (clearly, for any string T, Reverse(Reverse(T)) = T).<\/p>\r\n\r\n<p>For instance, Reverse(&quot;ABC&quot;) = &quot;CBA&quot;.<\/p>\r\n\r\n<p>For each of these N strings, you can decide whether to choose Reverse() to it or not --&nbsp;and by doing so, you want to sort the N strings lexicographically (as there are N strings, you have 2<sup>N<\/sup>&nbsp;ways).<\/p>\r\n\r\n<p>Let &#39;1&#39; denote the case where you apply Reverse() to each string and &#39;0&#39; the other case -- then we&#39;ll have a 0-1 string of length N. We call such strings &quot;Reversal Strings&quot;.<\/p>\r\n\r\n<p>For instance, suppose that N = 3 and S[1] = &quot;ABC&quot;, S[2] = &quot;XC&quot;, and S[3] = &quot;DZ&quot;.<\/p>\r\n\r\n<ul>\r\n\t<li>For the Reversal String &quot;000&quot;: The three strings remain as-is (&quot;ABC&quot;, &quot;XC&quot;, and &quot;DZ&quot;), which is not lexicographically sorted.&nbsp;(S[3] comes before&nbsp;S[2].)<\/li>\r\n\t<li>For the Reversal String &quot;001&quot;: We apply Reverse() only to the third string, and we end up with&nbsp;&quot;ABC&quot;, &quot;XC&quot;, and &quot;ZD&quot;&nbsp;which is lexicographically sorted.<\/li>\r\n\t<li>For the Reversal String &quot;010&quot;: We apply Reverse() only to the second string, and we end up with &quot;ABC&quot;, &quot;CX&quot;, and &quot;DZ&quot; which is lexicographically sorted.<\/li>\r\n\t<li>For the Reversal String &quot;101&quot;: We apply Reverse() only to the first and third strings, and we end up with &quot;CBA&quot;, &quot;XC&quot;, and &quot;ZD&quot; which is lexicographically sorted.<\/li>\r\n<\/ul>\r\n\r\n<p>There are other ways to sort these strings in lexicographic order.<\/p>\r\n\r\n<p>Given N strings, find a Reversal String&nbsp;that sorts the strings in lexicographic order; if there are multiple such Reversal Strings, find the one that comes lexicographically first.<\/p>\r\n","input":"<p>The first line will contain the number of test cases, T.&nbsp;<\/p>\r\n\r\n<p>For each test case, the first line will contain N, the number of strings.<\/p>\r\n\r\n<p>In the next N lines, each line will contain one string that consists only of uppercase English alphabets.&nbsp;<\/p>\r\n","output":"<p>For each test case, output the Reversal String that sorts the given strings in lexicographic order; if there exist multiple such Reversal Strings, output the one that comes lexicographically first.<\/p>\r\n","hint":"<p>Lexicographic order: Given two strings S and T, if S is a prefix of T or s comes before t when s and t are the first characters of S and T that differ, then S comes before T.<\/p>\r\n","original":"0","html_title":"0","problem_lang_tcode":"English","limit":"<ul>\r\n\t<li>1 &le; T &le; 50<\/li>\r\n\t<li>2 &le; N &le; 150<\/li>\r\n\t<li>2 &le; Length (S[i]) &le; 20<\/li>\r\n\t<li>For every i &ne; j, Reverse(S[i]) &ne; S[j] and S[i] &ne; S[j] always hold.<\/li>\r\n\t<li>For each test case, there always exists at least one Reversal String that sorts the input strings in lexicographic order.<\/li>\r\n<\/ul>\r\n"}]

시간 제한

  • Java 8: 2 초
  • Python 3: 2 초
  • PyPy3: 2 초
  • Java 8 (OpenJDK): 2 초
  • Java 11: 2 초
  • Python 2: 2 초
  • PyPy2: 2 초
  • Kotlin (JVM): 2 초
  • Java 15: 2 초