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33699번 - 트리오 다국어

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문제

윤이, 달구, 포닉스는 2025 UDPC를 기다리며 나무 한 그루를 함께 기르고 있다. 이 나무는 $N$개의 정점으로 이루어진 루트 없는 트리로 표현되며, 트리의 정점은 1ドル$번부터 $N$번까지의 번호로 구분된다.

세 친구는 나무에 대한 취향이 뚜렷해서 각 정점에 자신만의 새로운 번호를 붙였다. 구체적으로는, 기존의 $i$번 정점에 윤이는 번호 $A_i$를, 달구는 $B_i$를, 포닉스는 $C_i$를 붙였다. UDPC가 끝난 후 각자의 집으로 돌아가야 하는 세 친구는 이 나무를 세 부분으로 나누기로 했다. 이는 서로 다른 두 개의 간선을 골라 없애는 것을 의미한다.

이때, 쪼개진 각 부분 트리는 아래와 같은 조건을 만족해야 한다.

  • 한 부분 트리에 속한 원래 정점의 번호를 $\{v_1,v_2,\cdots ,v_m\}$이라 하면, $\{A_{v_1},\cdots A_{v_m}\} =\{B_{v_1},\cdots B_{v_m}\} =\{C_{v_1},\cdots C_{v_m}\}$ 이어야 한다.
  • 즉, 모든 부분 트리에 대해서 각 친구가 새로 붙인 번호의 집합이 같아야 한다.

세 친구는 나눠진 세 부분 트리 중 가장 크기가 작은 것의 크기를 최대한 크게 하고 싶다. 트리의 크기는 포함된 정점의 개수로 정의된다.

세 친구를 위해 나무를 공평하게 나누어 보자.

입력

첫째 줄에 테스트 케이스의 개수 $T$가 주어진다. $(1\le T\le 100,円 000)$

각 테스트 케이스의 첫째 줄에 정점의 개수 $N$이 주어진다. $(3\le N\le 300,000円)$

각 테스트 케이스의 둘째 줄에 윤이가 새로 붙인 정점 번호 $A_1,\cdots ,A_N$이 공백으로 구분되어 주어진다.

각 테스트 케이스의 셋째 줄에 달구가 새로 붙인 정점 번호 $B_1,\cdots ,B_N$이 공백으로 구분되어 주어진다.

각 테스트 케이스의 넷째 줄에 포닉스가 새로 붙인 정점 번호 $C_1,\cdots ,C_N$이 공백으로 구분되어 주어진다.

$A,ドル $B,ドル $C$는 모두 길이가 $N$인 순열임이 보장된다.

각 테스트 케이스의 다섯 번째 줄부터 $N-1$개의 줄에 걸쳐 트리의 간선을 이루는 서로 다른 두 정점 $u,ドル $v$가 주어진다. $(1\le u,v\le N)$

주어지는 간선이 트리 구조를 이룸과, 모든 테스트 케이스에 대해 $N$의 합이 300ドル,000円$ 이하임이 보장된다.

출력

각 테스트 케이스에 대해, 나무를 세 부분으로 나눌 때 가장 작은 부분 트리 크기의 최댓값을 한 줄에 하나씩 순서대로 출력하여라. 만약 나무를 세 부분으로 나누는 것이 불가능하다면 $-1$을 출력하여라.

제한

예제 입력 1

3
5
1 2 3 4 5
3 2 1 4 5
1 4 3 2 5
1 2
1 3
2 4
2 5
3
1 2 3
2 3 1
3 1 2
1 2
1 3
10
1 2 3 4 5 6 7 8 9 10
1 2 6 8 7 3 5 4 9 10
2 1 9 4 5 6 10 8 3 7
1 2
1 3
2 7
2 8
8 4
7 5
10 7
6 3
3 9

예제 출력 1

1
-1
3

힌트

[{"problem_id":"33699","problem_lang":"0","title":"\ud2b8\ub9ac\uc624","description":"<p>\uc724\uc774, \ub2ec\uad6c, \ud3ec\ub2c9\uc2a4\ub294 2025 UDPC\ub97c \uae30\ub2e4\ub9ac\uba70 \ub098\ubb34 \ud55c \uadf8\ub8e8\ub97c \ud568\uaed8 \uae30\ub974\uace0 \uc788\ub2e4. \uc774 \ub098\ubb34\ub294 $N$\uac1c\uc758 \uc815\uc810\uc73c\ub85c \uc774\ub8e8\uc5b4\uc9c4 \ub8e8\ud2b8 \uc5c6\ub294 \ud2b8\ub9ac\ub85c \ud45c\ud604\ub418\uba70, \ud2b8\ub9ac\uc758 \uc815\uc810\uc740 $1$\ubc88\ubd80\ud130 $N$\ubc88\uae4c\uc9c0\uc758 \ubc88\ud638\ub85c \uad6c\ubd84\ub41c\ub2e4.<\/p>\r\n\r\n<p>\uc138 \uce5c\uad6c\ub294 \ub098\ubb34\uc5d0 \ub300\ud55c \ucde8\ud5a5\uc774 \ub69c\ub837\ud574\uc11c \uac01 \uc815\uc810\uc5d0 \uc790\uc2e0\ub9cc\uc758 \uc0c8\ub85c\uc6b4 \ubc88\ud638\ub97c \ubd99\uc600\ub2e4. \uad6c\uccb4\uc801\uc73c\ub85c\ub294, \uae30\uc874\uc758 $i$\ubc88 \uc815\uc810\uc5d0 \uc724\uc774\ub294 \ubc88\ud638 $A_i$\ub97c, \ub2ec\uad6c\ub294 $B_i$\ub97c, \ud3ec\ub2c9\uc2a4\ub294 $C_i$\ub97c \ubd99\uc600\ub2e4. UDPC\uac00 \ub05d\ub09c \ud6c4 \uac01\uc790\uc758 \uc9d1\uc73c\ub85c \ub3cc\uc544\uac00\uc57c \ud558\ub294 \uc138 \uce5c\uad6c\ub294 \uc774 \ub098\ubb34\ub97c \uc138 \ubd80\ubd84\uc73c\ub85c \ub098\ub204\uae30\ub85c \ud588\ub2e4. \uc774\ub294 \uc11c\ub85c \ub2e4\ub978 \ub450 \uac1c\uc758 \uac04\uc120\uc744 \uace8\ub77c \uc5c6\uc560\ub294 \uac83\uc744 \uc758\ubbf8\ud55c\ub2e4.<\/p>\r\n\r\n<p>\uc774\ub54c, \ucabc\uac1c\uc9c4 \uac01 \ubd80\ubd84 \ud2b8\ub9ac\ub294 \uc544\ub798\uc640 \uac19\uc740 \uc870\uac74\uc744 \ub9cc\uc871\ud574\uc57c \ud55c\ub2e4.<\/p>\r\n\r\n<ul>\r\n\t<li>\ud55c \ubd80\ubd84 \ud2b8\ub9ac\uc5d0 \uc18d\ud55c \uc6d0\ub798 \uc815\uc810\uc758 \ubc88\ud638\ub97c $\\{v_1,v_2,\\cdots ,v_m\\}$\uc774\ub77c \ud558\uba74, $\\{A_{v_1},\\cdots A_{v_m}\\} =\\{B_{v_1},\\cdots B_{v_m}\\} =\\{C_{v_1},\\cdots C_{v_m}\\}$ \uc774\uc5b4\uc57c \ud55c\ub2e4.<\/li>\r\n\t<li>\uc989, \ubaa8\ub4e0 \ubd80\ubd84 \ud2b8\ub9ac\uc5d0 \ub300\ud574\uc11c \uac01 \uce5c\uad6c\uac00 \uc0c8\ub85c \ubd99\uc778 \ubc88\ud638\uc758 \uc9d1\ud569\uc774 \uac19\uc544\uc57c \ud55c\ub2e4.<\/li>\r\n<\/ul>\r\n\r\n<p>\uc138 \uce5c\uad6c\ub294 \ub098\ub220\uc9c4 \uc138 \ubd80\ubd84 \ud2b8\ub9ac \uc911 \uac00\uc7a5 \ud06c\uae30\uac00 \uc791\uc740 \uac83\uc758 \ud06c\uae30\ub97c \ucd5c\ub300\ud55c \ud06c\uac8c \ud558\uace0 \uc2f6\ub2e4. \ud2b8\ub9ac\uc758 \ud06c\uae30\ub294 \ud3ec\ud568\ub41c \uc815\uc810\uc758 \uac1c\uc218\ub85c \uc815\uc758\ub41c\ub2e4.<\/p>\r\n\r\n<p>\uc138 \uce5c\uad6c\ub97c \uc704\ud574 \ub098\ubb34\ub97c \uacf5\ud3c9\ud558\uac8c \ub098\ub204\uc5b4 \ubcf4\uc790.<\/p>\r\n","input":"<p>\uccab\uc9f8 \uc904\uc5d0 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uac1c\uc218 $T$\uac00 \uc8fc\uc5b4\uc9c4\ub2e4. $(1\\le T\\le 100\\, 000)$<\/p>\r\n\r\n<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uccab\uc9f8 \uc904\uc5d0 \uc815\uc810\uc758 \uac1c\uc218 $N$\uc774 \uc8fc\uc5b4\uc9c4\ub2e4. $(3\\le N\\le 300\\,000)$<\/p>\r\n\r\n<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \ub458\uc9f8 \uc904\uc5d0 \uc724\uc774\uac00 \uc0c8\ub85c \ubd99\uc778 \uc815\uc810 \ubc88\ud638 $A_1,\\cdots ,A_N$\uc774 \uacf5\ubc31\uc73c\ub85c \uad6c\ubd84\ub418\uc5b4 \uc8fc\uc5b4\uc9c4\ub2e4.<\/p>\r\n\r\n<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uc14b\uc9f8 \uc904\uc5d0 \ub2ec\uad6c\uac00 \uc0c8\ub85c \ubd99\uc778 \uc815\uc810 \ubc88\ud638 $B_1,\\cdots ,B_N$\uc774 \uacf5\ubc31\uc73c\ub85c \uad6c\ubd84\ub418\uc5b4 \uc8fc\uc5b4\uc9c4\ub2e4.<\/p>\r\n\r\n<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \ub137\uc9f8 \uc904\uc5d0 \ud3ec\ub2c9\uc2a4\uac00 \uc0c8\ub85c \ubd99\uc778 \uc815\uc810 \ubc88\ud638 $C_1,\\cdots ,C_N$\uc774 \uacf5\ubc31\uc73c\ub85c \uad6c\ubd84\ub418\uc5b4 \uc8fc\uc5b4\uc9c4\ub2e4.<\/p>\r\n\r\n<p>$A$, $B$, $C$\ub294 \ubaa8\ub450 \uae38\uc774\uac00 $N$\uc778 \uc21c\uc5f4\uc784\uc774 \ubcf4\uc7a5\ub41c\ub2e4.<\/p>\r\n\r\n<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \ub2e4\uc12f \ubc88\uc9f8 \uc904\ubd80\ud130 $N-1$\uac1c\uc758 \uc904\uc5d0 \uac78\uccd0 \ud2b8\ub9ac\uc758 \uac04\uc120\uc744 \uc774\ub8e8\ub294 \uc11c\ub85c \ub2e4\ub978 \ub450 \uc815\uc810 $u$, $v$\uac00 \uc8fc\uc5b4\uc9c4\ub2e4. $(1\\le u,v\\le N)$<\/p>\r\n\r\n<p>\uc8fc\uc5b4\uc9c0\ub294 \uac04\uc120\uc774 \ud2b8\ub9ac \uad6c\uc870\ub97c \uc774\ub8f8\uacfc, \ubaa8\ub4e0 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc5d0 \ub300\ud574 $N$\uc758 \ud569\uc774 $300\\,000$ \uc774\ud558\uc784\uc774 \ubcf4\uc7a5\ub41c\ub2e4.<\/p>\r\n","output":"<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc5d0 \ub300\ud574, \ub098\ubb34\ub97c \uc138 \ubd80\ubd84\uc73c\ub85c \ub098\ub20c \ub54c \uac00\uc7a5 \uc791\uc740 \ubd80\ubd84 \ud2b8\ub9ac \ud06c\uae30\uc758 \ucd5c\ub313\uac12\uc744 \ud55c \uc904\uc5d0 \ud558\ub098\uc529 \uc21c\uc11c\ub300\ub85c \ucd9c\ub825\ud558\uc5ec\ub77c. \ub9cc\uc57d \ub098\ubb34\ub97c \uc138 \ubd80\ubd84\uc73c\ub85c \ub098\ub204\ub294 \uac83\uc774 \ubd88\uac00\ub2a5\ud558\ub2e4\uba74 $-1$\uc744 \ucd9c\ub825\ud558\uc5ec\ub77c.<\/p>\r\n","hint":"","original":"1","html_title":"0","problem_lang_tcode":"Korean"},{"problem_id":"33699","problem_lang":"1","title":"Treeo","description":"<p>Yunee, Dalgoo, and Ponix are eagerly waiting for the 2025 UDPC while taking care of a tree together. This tree is represented as an unrooted tree with $N$ vertices, where each vertex is numbered from $1$ to $N$.<\/p>\r\n\r\n<p>Each friend has their own unique preference for numbering the tree&rsquo;s vertices. Specifically, for each original vertex $i$, Yunee assigns it a number $A_i$, Dalgoo assigns $B_i$, and Ponix assigns $C_i$. After UDPC ends, the three friends must return to their homes, so they decided to divide the tree into three parts. This means selecting two different edges and removing them.<\/p>\r\n\r\n<p>The resulting three subtrees must satisfy the following condition:<\/p>\r\n\r\n<ul>\r\n\t<li>If a subtree contains the original vertices $\\{v_1,v_2,\\cdots ,v_m\\}$, then $\\{A_{v_1},\\cdots A_{v_m}\\} =\\{B_{v_1},\\cdots B_{v_m}\\} =\\{C_{v_1},\\cdots C_{v_m}\\}$.<\/li>\r\n\t<li>In other words, for each subtree, the set of numbers assigned by Yunee, Dalgoo, and Ponix must be identical.<\/li>\r\n<\/ul>\r\n\r\n<p>The friends want to maximize the size of the smallest of the three resulting subtrees. The size of a tree is defined as the number of vertices it contains.<\/p>\r\n\r\n<p>Help the three friends divide the tree as fairly as possible.<\/p>\r\n","input":"<p>Each test consists of multiple test cases. The first line contains a single integer $T$, the number of test cases. $(1 \\le T \\le 100\\,000)$<\/p>\r\n\r\n<p>The first line of each test case contains an integer $N$, the number of vertices of the tree. $(3\\le N\\le 300\\,000)$<\/p>\r\n\r\n<p>The second line of each test case contains $N$ space-separated integers $A_1, \\cdots, A_N$: the new vertex numbers assigned by Yunee.<\/p>\r\n\r\n<p>The third line of each test case contains $N$ space-separated integers $B_1, \\cdots, B_N$: the new vertex numbers assigned by Dalgoo.<\/p>\r\n\r\n<p>The fourth line of each test case contains $N$ space-separated integers $C_1, \\cdots, C_N$: the new vertex numbers assigned by Ponix.<\/p>\r\n\r\n<p>It is guaranteed that $A$, $B$, and $C$ are all permutations of length $N$.<\/p>\r\n\r\n<p>Each of the following $N-1$ lines&nbsp;of each test case contains two space-separated integers $u$ and $v$, representing an edge in the tree. $(1 \\le u, v \\le N)$<\/p>\r\n\r\n<p>It is guaranteed that the given edges form a tree structure and that the sum of $N$ for all test cases does not exceed $300\\,000$.<\/p>\r\n","output":"<p>For each test case, print the maximum possible size of the smallest of the three resulting subtrees when the tree is divided into three parts. If it is impossible to divide the tree into three valid parts, print $-1$.<\/p>\r\n","hint":"","original":"0","html_title":"0","problem_lang_tcode":"English"}]

출처

University > UNIST-DGIST-POSTECH > 2025 UNIST-DGIST-POSTECH 연합 프로그래밍 경진대회 (2025 UDPC) > Junior Division I번

(追記) (追記ここまで)

출처

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