시간 제한 메모리 제한 제출 정답 맞은 사람 정답 비율
1.5 초 (하단 참고) 256 MB 57 18 14 32.558%

문제

당신은 N개의 동물 장난감을 이용하여 모의 전쟁 놀이를 하려고 한다. 장난감은 편의상 1부터 N까지 번호가 붙어있고, 당신은 이를 두 개의 동맹군으로 나누고 싶다. 다만 특정 장난감끼리 사이가 안 좋을 수 있는데 (가령 강아지 장난감과 고양이 장난감 혹은 배트맨과 조커) 그러한 장난감 쌍은 같은 동맹군에 속할 수 없다.

예를 들어, N = 3 이고 (1, 2)가 서로 동맹이 될 수 없고, (2, 3)도 서로 동맹이 될 수 없으며, (3, 1)도 서로 동맹이 될 수 없다고 해보자. 이 경우 어떻게 세 개의 장난감을 두 동맹군으로 나누더라도 두 동맹군 중 하나는 동맹이 될 수 없는 관계인 장난감 쌍을 가지게 되므로 나누는 것이 불가능하다. 다른 예로 N = 4 이고 (1, 2), (2, 3), (3, 4), (4, 1) 이렇게 네 쌍의 장난감 관계들이 주어진다면 {1, 3} 과 {2, 4} 두 동맹군으로 나눌 수 있다.

이렇게 다양한 이유로 서로 "동맹"이 될 수 없는 장난감 쌍이 총 M개 주어졌을 때, 당신은 N개의 장난감을 두 개의 동맹군으로 나누되 서로 동맹이 될 수 없는 장난감 쌍은 서로 다른 동맹군에 속하도록 나누고 싶다.

입력

첫 줄에 테스트 케이스의 수 T가 주어진다.

각 테스트 케이스의 첫 줄에는 N과 M이 공백으로 구분되어 주어진다.

다음 M줄에 걸쳐 각 줄에 한 쌍의 장난감 번호가 공백으로 구분되어 주어진다.

출력

각 테스트 케이스에 대해 N개의 장난감을 두 동맹군으로 나눌 수 있는 경우 "YES"를 출력하고 그렇지 않은 경우 "NO"를 출력한다. (모두 대문자이며 따옴표는 제외)

제한

  • 1 ≤ T ≤ 10
  • 각 줄에 주어지는 장난감 쌍의 번호가 같은 경우는 입력으로 주어지지 않는다
  • 한 테스트 케이스 내에서 같은 장난감 한 쌍이 입력으로 여러 번 주어지지 않는다 (가령 x y 가 한 번 입력으로 주어지면 x y 혹은 y x 는 같은 테스트 케이스에서 다시 입력으로 주어지지 않는다)

서브태스크 1 (4점)

  • 1 ≤ T ≤ 10
  • 3 ≤ N ≤ 16
  • 1 ≤ M ≤ 16

서브태스크 2 (8점)

  • 1 ≤ T ≤ 10
  • 3 ≤ N ≤ 300,000
  • 1 ≤ M ≤ 300,000

예제 입력 1

3
3 3
1 2
2 3
3 1
4 4
1 2
2 3
3 4
4 1
6 6
1 2
2 3
1 4
1 5
6 2
4 6

예제 출력 1

NO
YES
YES

예제 1과 예제 2는 문제에서 다루었다.

예제 3의 경우 {1, 3, 6} 과 {2, 4, 5} 로 나눌 수 있다.

[{"problem_id":"19240","problem_lang":"0","title":"\uc7a5\ub09c\uac10 \ub3d9\ub9f9\uad70","description":"<p>\ub2f9\uc2e0\uc740&nbsp;N\uac1c\uc758 \ub3d9\ubb3c \uc7a5\ub09c\uac10\uc744 \uc774\uc6a9\ud558\uc5ec \ubaa8\uc758 \uc804\uc7c1 \ub180\uc774\ub97c \ud558\ub824\uace0 \ud55c\ub2e4. \uc7a5\ub09c\uac10\uc740 \ud3b8\uc758\uc0c1 1\ubd80\ud130 N\uae4c\uc9c0 \ubc88\ud638\uac00 \ubd99\uc5b4\uc788\uace0, \ub2f9\uc2e0\uc740&nbsp;\uc774\ub97c \ub450 \uac1c\uc758 \ub3d9\ub9f9\uad70\uc73c\ub85c \ub098\ub204\uace0 \uc2f6\ub2e4. \ub2e4\ub9cc&nbsp;\ud2b9\uc815 \uc7a5\ub09c\uac10\ub07c\ub9ac&nbsp;\uc0ac\uc774\uac00 \uc548 \uc88b\uc744 \uc218 \uc788\ub294\ub370 (\uac00\ub839 \uac15\uc544\uc9c0 \uc7a5\ub09c\uac10\uacfc \uace0\uc591\uc774 \uc7a5\ub09c\uac10 \ud639\uc740 \ubc30\ud2b8\ub9e8\uacfc \uc870\ucee4) \uadf8\ub7ec\ud55c&nbsp;\uc7a5\ub09c\uac10 \uc30d\uc740&nbsp;\uac19\uc740 \ub3d9\ub9f9\uad70\uc5d0 \uc18d\ud560 \uc218 \uc5c6\ub2e4.<\/p>\r\n\r\n<p>\uc608\ub97c \ub4e4\uc5b4, N = 3 \uc774\uace0 (1, 2)\uac00 \uc11c\ub85c \ub3d9\ub9f9\uc774 \ub420 \uc218 \uc5c6\uace0, (2, 3)\ub3c4 \uc11c\ub85c \ub3d9\ub9f9\uc774 \ub420 \uc218 \uc5c6\uc73c\uba70, (3, 1)\ub3c4 \uc11c\ub85c \ub3d9\ub9f9\uc774 \ub420 \uc218 \uc5c6\ub2e4\uace0 \ud574\ubcf4\uc790. \uc774 \uacbd\uc6b0 \uc5b4\ub5bb\uac8c \uc138 \uac1c\uc758 \uc7a5\ub09c\uac10\uc744 \ub450 \ub3d9\ub9f9\uad70\uc73c\ub85c \ub098\ub204\ub354\ub77c\ub3c4 \ub450 \ub3d9\ub9f9\uad70 \uc911 \ud558\ub098\ub294 \ub3d9\ub9f9\uc774 \ub420 \uc218 \uc5c6\ub294 \uad00\uacc4\uc778 \uc7a5\ub09c\uac10 \uc30d\uc744 \uac00\uc9c0\uac8c \ub418\ubbc0\ub85c \ub098\ub204\ub294 \uac83\uc774 \ubd88\uac00\ub2a5\ud558\ub2e4. \ub2e4\ub978 \uc608\ub85c N = 4 \uc774\uace0 (1, 2), (2, 3), (3, 4), (4, 1) \uc774\ub807\uac8c \ub124 \uc30d\uc758 \uc7a5\ub09c\uac10 \uad00\uacc4\ub4e4\uc774 \uc8fc\uc5b4\uc9c4\ub2e4\uba74 {1, 3} \uacfc {2, 4} \ub450 \ub3d9\ub9f9\uad70\uc73c\ub85c \ub098\ub20c \uc218 \uc788\ub2e4.<\/p>\r\n\r\n<p>\uc774\ub807\uac8c&nbsp;\ub2e4\uc591\ud55c \uc774\uc720\ub85c \uc11c\ub85c &quot;\ub3d9\ub9f9&quot;\uc774 \ub420 \uc218 \uc5c6\ub294 \uc7a5\ub09c\uac10 \uc30d\uc774 \ucd1d M\uac1c \uc8fc\uc5b4\uc84c\uc744 \ub54c,&nbsp;\ub2f9\uc2e0\uc740 N\uac1c\uc758 \uc7a5\ub09c\uac10\uc744 \ub450 \uac1c\uc758 \ub3d9\ub9f9\uad70\uc73c\ub85c \ub098\ub204\ub418 \uc11c\ub85c \ub3d9\ub9f9\uc774 \ub420 \uc218 \uc5c6\ub294 \uc7a5\ub09c\uac10 \uc30d\uc740 \uc11c\ub85c \ub2e4\ub978 \ub3d9\ub9f9\uad70\uc5d0 \uc18d\ud558\ub3c4\ub85d \ub098\ub204\uace0 \uc2f6\ub2e4.<\/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>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uccab \uc904\uc5d0\ub294 N\uacfc M\uc774 \uacf5\ubc31\uc73c\ub85c \uad6c\ubd84\ub418\uc5b4 \uc8fc\uc5b4\uc9c4\ub2e4.<\/p>\r\n\r\n<p>\ub2e4\uc74c M\uc904\uc5d0 \uac78\uccd0 \uac01 \uc904\uc5d0 \ud55c \uc30d\uc758 \uc7a5\ub09c\uac10 \ubc88\ud638\uac00 \uacf5\ubc31\uc73c\ub85c \uad6c\ubd84\ub418\uc5b4 \uc8fc\uc5b4\uc9c4\ub2e4.<\/p>\r\n","output":"<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc5d0 \ub300\ud574 N\uac1c\uc758 \uc7a5\ub09c\uac10\uc744 \ub450 \ub3d9\ub9f9\uad70\uc73c\ub85c \ub098\ub20c \uc218 \uc788\ub294 \uacbd\uc6b0 &quot;YES&quot;\ub97c \ucd9c\ub825\ud558\uace0 \uadf8\ub807\uc9c0 \uc54a\uc740 \uacbd\uc6b0 &quot;NO&quot;\ub97c \ucd9c\ub825\ud55c\ub2e4. (\ubaa8\ub450 \ub300\ubb38\uc790\uc774\uba70 \ub530\uc634\ud45c\ub294 \uc81c\uc678)<\/p>\r\n","hint":"","original":"1","html_title":"0","problem_lang_tcode":"Korean","limit":"<ul>\r\n\t<li>1 &le; T &le; 10<\/li>\r\n\t<li>\uac01 \uc904\uc5d0 \uc8fc\uc5b4\uc9c0\ub294 \uc7a5\ub09c\uac10 \uc30d\uc758 \ubc88\ud638\uac00 \uac19\uc740 \uacbd\uc6b0\ub294 \uc785\ub825\uc73c\ub85c \uc8fc\uc5b4\uc9c0\uc9c0 \uc54a\ub294\ub2e4<\/li>\r\n\t<li>\ud55c \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4 \ub0b4\uc5d0\uc11c \uac19\uc740 \uc7a5\ub09c\uac10 \ud55c \uc30d\uc774 \uc785\ub825\uc73c\ub85c \uc5ec\ub7ec \ubc88 \uc8fc\uc5b4\uc9c0\uc9c0 \uc54a\ub294\ub2e4 (\uac00\ub839 x y \uac00 \ud55c \ubc88 \uc785\ub825\uc73c\ub85c \uc8fc\uc5b4\uc9c0\uba74 x y \ud639\uc740 y x \ub294 \uac19\uc740 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc5d0\uc11c \ub2e4\uc2dc \uc785\ub825\uc73c\ub85c \uc8fc\uc5b4\uc9c0\uc9c0 \uc54a\ub294\ub2e4)<\/li>\r\n<\/ul>\r\n","subtask1":"<ul>\r\n\t<li>1 &le; T &le; 10<\/li>\r\n\t<li>3 &le; N &le; 16<\/li>\r\n\t<li>1 &le; M &le; 16<\/li>\r\n<\/ul>\r\n","subtask2":"<ul>\r\n\t<li>1 &le; T &le; 10<\/li>\r\n\t<li>3 &le; N &le; 300,000<\/li>\r\n\t<li>1 &le; M &le; 300,000<\/li>\r\n<\/ul>\r\n","sample_explain_1":"<p>\uc608\uc81c 1\uacfc \uc608\uc81c 2\ub294 \ubb38\uc81c\uc5d0\uc11c \ub2e4\ub8e8\uc5c8\ub2e4.<\/p>\r\n\r\n<p>\uc608\uc81c 3\uc758 \uacbd\uc6b0 {1, 3, 6} \uacfc {2, 4, 5} \ub85c \ub098\ub20c \uc218 \uc788\ub2e4.<\/p>\r\n"},{"problem_id":"19240","problem_lang":"1","title":"Toys","description":"<p>You have N plushie toys that are numbered from 1 to N.&nbsp; You want to partition them into two groups.<br \/>\r\nSome pairs are not so friendly to each other (e.g., a doggy toy and a kitty toy, or a Batman toy and a Joker toy), and you can&#39;t keep such pairs in the same group.<\/p>\r\n\r\n<p>For instance, let N = 3 and { (1, 2), (2, 3), (3, 1) } represent unfriendly pairs of toys (that is, toy 1 and toy 2 cannot be in the same group, and so on). In this case, it is impossible to divide toys into two groups while keeping unfriendly pairs separated.<br \/>\r\nIn another example, let N = 4 and { (1, 2), (2, 3), (3, 4), (4, 1) } represent unfriendly pairs of toys. In this case, we can divide them into two groups {1, 3} and {2, 4} so that all unfriendly pairs are separated.<\/p>\r\n\r\n<p>Given N toys and M unfriendly pairs, decide whether you can divide them into two groups so that every unfriendly pair would be separated.&nbsp;<\/p>\r\n","input":"<p>The first line will contain the number of test cases, T.<\/p>\r\n\r\n<p>For each test case, the first line will contain two integers, N and M, separated by a whitespace.<\/p>\r\n\r\n<p>Each of the next M lines will contain a pair of integers (an unfriendly pair)&nbsp;separated by a whitespace.<\/p>\r\n","output":"<p>For each test case, output &quot;YES&quot; if N toys can be divided into two groups with all unfriendly pairs separated; otherwise output &quot;NO&quot; (all in uppercase except quotes; quotes here are for clarity).<\/p>\r\n","hint":"","original":"0","html_title":"0","problem_lang_tcode":"English","limit":"<ul>\r\n\t<li>1 &le; T &le; 10<\/li>\r\n\t<li>Each unfriendly pair will contain two distinct numbers<\/li>\r\n\t<li>In each test case, no unfriendly pairs will be given as input more than once (i.e., if &quot;x y&quot; is a part of input, then no more&nbsp;&quot;x y&quot; or &quot;y x&quot; will be given for the same test case)<\/li>\r\n<\/ul>\r\n","subtask1":"<ul>\r\n\t<li>3 &le; N &le; 16<\/li>\r\n\t<li>1 &le; M &le; 16<\/li>\r\n<\/ul>\r\n","subtask2":"<ul>\r\n\t<li>3 &le; N &le; 300,000<\/li>\r\n\t<li>1 &le; M &le; 300,000<\/li>\r\n<\/ul>\r\n","sample_explain_1":"<p>Case 1 and Case 2 were discussed in the problem statement.<\/p>\r\n\r\n<p>In Case 3, {1, 3, 6} and {2, 4, 5} would be a valid partition.<\/p>\r\n\r\n<p>&nbsp;<\/p>\r\n"}]

시간 제한

  • Java 8: 4 초
  • Python 3: 6 초
  • PyPy3: 6 초
  • Java 8 (OpenJDK): 4 초
  • Java 11: 4 초
  • Python 2: 6 초
  • PyPy2: 6 초
  • Kotlin (JVM): 4 초
  • Java 15: 4 초

채점 및 기타 정보

  • 예제는 채점하지 않는다.