시간 제한 메모리 제한 제출 정답 맞은 사람 정답 비율
3 초 256 MB 255 59 37 22.424%

문제

철승이는 사물을 좌표계로 생각하기를 좋아한다. 어느 날 집안에 파리가 앉았던 벽의 위치마다 점을 찍고있던 철승이는 엄마에게 등짝 스매싱을 맞는다.

철승이네 집의 벽은 한 변이 1cm인 정사각형의 패턴이 그려진 벽지로 도배되어 있으며, 똑똑한 파리는 이 패턴 정사각형의 모서리에만 앉았다.

< 파리가 앉은 예시 >

새로운 벽지로 모든 점들을 덮으려고하던 철승이는 갑자기 궁금증이 생겼다. 정사각형 모양의 벽지조각 3개만 사용해서 모든 점들을 가린다고 하면 조각의 한 변은 최소 몇 cm이어야 할까?

크기가 똑같고, 벽지와 같은 무늬의 정사각형 종이 3장으로 모든 점들을 가린다고 할 때에 한 종이의 변은 최소 몇 cm인지 계산해보자. 벽지는 깔끔하게 다시 도배해야 하므로 모든 종이는 정확히 정사각형 패턴들과 모서리가 일치해야한다. 종이의 모서리나 면 끝과 점한 점은 가려졌다고 가정한다.

아래의 예제는 정사각형 종이 3장으로 위의 점들을 가리는 경우들을 보여준다.

두 경우에서 오른쪽의 방법이 종이가 더 작으므로 더 좋은 방법이 된다. 철승이의 궁금증을 풀어주기 위해 최소의 벽지 조각의 크기를 계산하자.

모든 종이의 크기는 정수여야하며, 한 점만 가리는 종이(크기가 0인)가 있을 수 있다. 세 종이의 크기는 모두 동일해야 한다.

입력

입력의 첫 줄에는 테스트 케이스의 수 T가 주어진다.

이 후 T개의 테스트 케이스마다, 첫 줄에는 점의 수 n (1 ≤ n ≤ 100,000)이 주어진다.

그 후 n줄에 걸쳐서 점의 위치 xi, yi (-1,000,000,000 ≤ xi, yi ≤ 1,000,000,000) 가 주어진다.

출력

각 테스트 케이스마다 한 줄에 최소의 종이조각의 크기를 정수로 출력하시오. 단, 종이조각의 크기는 0이 될 수 있음에 유의하시오.

예제 입력 1

3
5
1 0
0 1
5 2
2 3
3 2
11
1 8
3 8
5 5
5 10
6 4
7 7
8 8
9 2
11 6
12 3
10 4
4
1 1
2 8
-21 45
1 1

예제 출력 1

1
4
0

힌트

[{"problem_id":"10454","problem_lang":"0","title":"\uc138 \ub124\ubaa8","description":"<p>\ucca0\uc2b9\uc774\ub294 \uc0ac\ubb3c\uc744 \uc88c\ud45c\uacc4\ub85c \uc0dd\uac01\ud558\uae30\ub97c \uc88b\uc544\ud55c\ub2e4. \uc5b4\ub290 \ub0a0 \uc9d1\uc548\uc5d0 \ud30c\ub9ac\uac00 \uc549\uc558\ub358 \ubcbd\uc758 \uc704\uce58\ub9c8\ub2e4 \uc810\uc744 \ucc0d\uace0\uc788\ub358 \ucca0\uc2b9\uc774\ub294 \uc5c4\ub9c8\uc5d0\uac8c \ub4f1\uc9dd \uc2a4\ub9e4\uc2f1\uc744 \ub9de\ub294\ub2e4.<\/p>\r\n\r\n<p>\ucca0\uc2b9\uc774\ub124 \uc9d1\uc758 \ubcbd\uc740 \ud55c \ubcc0\uc774 1cm\uc778 \uc815\uc0ac\uac01\ud615\uc758 \ud328\ud134\uc774 \uadf8\ub824\uc9c4 \ubcbd\uc9c0\ub85c \ub3c4\ubc30\ub418\uc5b4 \uc788\uc73c\uba70, \ub611\ub611\ud55c \ud30c\ub9ac\ub294 \uc774 \ud328\ud134 \uc815\uc0ac\uac01\ud615\uc758 \ubaa8\uc11c\ub9ac\uc5d0\ub9cc \uc549\uc558\ub2e4.<\/p>\r\n\r\n<p style=\"text-align:center\"><img alt=\"\" src=\"\/upload\/images2\/3sq1.png\" \/><\/p>\r\n\r\n<p style=\"text-align:center\">&lt; \ud30c\ub9ac\uac00 \uc549\uc740 \uc608\uc2dc &gt;<\/p>\r\n\r\n<p>\uc0c8\ub85c\uc6b4 \ubcbd\uc9c0\ub85c \ubaa8\ub4e0 \uc810\ub4e4\uc744 \ub36e\uc73c\ub824\uace0\ud558\ub358 \ucca0\uc2b9\uc774\ub294 \uac11\uc790\uae30 \uad81\uae08\uc99d\uc774 \uc0dd\uacbc\ub2e4. \uc815\uc0ac\uac01\ud615 \ubaa8\uc591\uc758 \ubcbd\uc9c0\uc870\uac01 3\uac1c\ub9cc \uc0ac\uc6a9\ud574\uc11c \ubaa8\ub4e0 \uc810\ub4e4\uc744 \uac00\ub9b0\ub2e4\uace0 \ud558\uba74 \uc870\uac01\uc758 \ud55c \ubcc0\uc740 \ucd5c\uc18c \uba87 cm\uc774\uc5b4\uc57c \ud560\uae4c?<\/p>\r\n\r\n<p>\ud06c\uae30\uac00 \ub611\uac19\uace0, \ubcbd\uc9c0\uc640 \uac19\uc740 \ubb34\ub2ac\uc758 \uc815\uc0ac\uac01\ud615 \uc885\uc774 3\uc7a5\uc73c\ub85c \ubaa8\ub4e0 \uc810\ub4e4\uc744 \uac00\ub9b0\ub2e4\uace0 \ud560 \ub54c\uc5d0 \ud55c \uc885\uc774\uc758 \ubcc0\uc740 \ucd5c\uc18c \uba87 cm\uc778\uc9c0 \uacc4\uc0b0\ud574\ubcf4\uc790. \ubcbd\uc9c0\ub294 \uae54\ub054\ud558\uac8c \ub2e4\uc2dc \ub3c4\ubc30\ud574\uc57c \ud558\ubbc0\ub85c \ubaa8\ub4e0 \uc885\uc774\ub294 \uc815\ud655\ud788 \uc815\uc0ac\uac01\ud615 \ud328\ud134\ub4e4\uacfc \ubaa8\uc11c\ub9ac\uac00 \uc77c\uce58\ud574\uc57c\ud55c\ub2e4. \uc885\uc774\uc758 \ubaa8\uc11c\ub9ac\ub098 \uba74 \ub05d\uacfc \uc810\ud55c \uc810\uc740 \uac00\ub824\uc84c\ub2e4\uace0 \uac00\uc815\ud55c\ub2e4.<\/p>\r\n\r\n<p>\uc544\ub798\uc758 \uc608\uc81c\ub294 \uc815\uc0ac\uac01\ud615 \uc885\uc774 3\uc7a5\uc73c\ub85c \uc704\uc758 \uc810\ub4e4\uc744 \uac00\ub9ac\ub294 \uacbd\uc6b0\ub4e4\uc744 \ubcf4\uc5ec\uc900\ub2e4.<\/p>\r\n\r\n<p style=\"text-align:center\"><img alt=\"\" src=\"\/upload\/images2\/3sq2.png\" \/><\/p>\r\n\r\n<p>\ub450 \uacbd\uc6b0\uc5d0\uc11c \uc624\ub978\ucabd\uc758 \ubc29\ubc95\uc774 \uc885\uc774\uac00 \ub354 \uc791\uc73c\ubbc0\ub85c \ub354 \uc88b\uc740 \ubc29\ubc95\uc774 \ub41c\ub2e4. \ucca0\uc2b9\uc774\uc758 \uad81\uae08\uc99d\uc744 \ud480\uc5b4\uc8fc\uae30 \uc704\ud574 \ucd5c\uc18c\uc758 \ubcbd\uc9c0 \uc870\uac01\uc758 \ud06c\uae30\ub97c \uacc4\uc0b0\ud558\uc790.<\/p>\r\n\r\n<p>\ubaa8\ub4e0 \uc885\uc774\uc758 \ud06c\uae30\ub294 \uc815\uc218\uc5ec\uc57c\ud558\uba70, \ud55c \uc810\ub9cc \uac00\ub9ac\ub294 \uc885\uc774(\ud06c\uae30\uac00 0\uc778)\uac00 \uc788\uc744 \uc218 \uc788\ub2e4. \uc138 \uc885\uc774\uc758 \ud06c\uae30\ub294 \ubaa8\ub450 \ub3d9\uc77c\ud574\uc57c \ud55c\ub2e4.<\/p>\r\n","input":"<p>\uc785\ub825\uc758 \uccab \uc904\uc5d0\ub294 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uc218 T\uac00 \uc8fc\uc5b4\uc9c4\ub2e4.<\/p>\r\n\r\n<p>\uc774 \ud6c4 T\uac1c\uc758 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub9c8\ub2e4, \uccab \uc904\uc5d0\ub294 \uc810\uc758 \uc218 n (1 &le; n &le; 100,000)\uc774 \uc8fc\uc5b4\uc9c4\ub2e4.<\/p>\r\n\r\n<p>\uadf8 \ud6c4 n\uc904\uc5d0 \uac78\uccd0\uc11c \uc810\uc758 \uc704\uce58 x<sub>i<\/sub>, y<sub>i<\/sub> (-1,000,000,000 &le; x<sub>i<\/sub>, y<sub>i<\/sub> &le; 1,000,000,000)&nbsp;\uac00 \uc8fc\uc5b4\uc9c4\ub2e4.<\/p>\r\n","output":"<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub9c8\ub2e4 \ud55c \uc904\uc5d0 \ucd5c\uc18c\uc758 \uc885\uc774\uc870\uac01\uc758 \ud06c\uae30\ub97c \uc815\uc218\ub85c \ucd9c\ub825\ud558\uc2dc\uc624. \ub2e8, \uc885\uc774\uc870\uac01\uc758 \ud06c\uae30\ub294 0\uc774 \ub420 \uc218 \uc788\uc74c\uc5d0 \uc720\uc758\ud558\uc2dc\uc624.<\/p>\r\n","hint":"","original":"0","problem_lang_code":"\ud55c\uad6d\uc5b4"},{"problem_id":"10454","problem_lang":"1","title":"Three Squares","description":"<p>A square is called axis-parallel if its sides are vertical or horizontal, and two squares are said to be congruent if their side lengths are equal. You are given a set P of n points in the plane. Any real number x &ge; 0 is called 3SQ-sufficient for P if there exist three congruent axis-parallel squares of side length x such that the union of the three squares contains all points in the set P. If a square has side length zero, it is degenerated to a point, so you can consider a point itself as a square of side length zero. Your program is to find the smallest 3SQ-sufficient number for a given input set P of points.<\/p>\r\n\r\n<p style=\"text-align:center\"><img alt=\"\" src=\"\/upload\/images2\/3sq1.png\" style=\"height:190px; width:221px\" \/><\/p>\r\n\r\n<p style=\"text-align:center\">Figure 1. 11 points in the plane<\/p>\r\n\r\n<p>For example, let P be the set of 11 points in the plane as shown in Figure 1. Then, one can find three congruent axis-parallel squares of side length 5 whose union contains all these 11 points in the set P, as shown in Figure 2(a). This means that number 5 is 3SQ-sufficient for this set P of 11 points. Notice that points on the boundary of a square are considered to be contained in the square.<\/p>\r\n\r\n<p style=\"text-align:center\"><img alt=\"\" src=\"\/upload\/images2\/3sq2.png\" style=\"height:196px; width:493px\" \/><\/p>\r\n\r\n<p style=\"text-align:center\">Figure 2. Two numbers 5 and 4 are 3SQ-sufficient<\/p>\r\n\r\n<p>You can find an even smaller 3SQ-sufficient number for this case; there exist three axis-parallel squares of side length 4 whose union contains all the 11 points as illustrated in Figure 2(b). More effort to find a further smaller 3SQ-sufficient number will be however worthless because number 4 is in fact the smallest 3SQ-sufficient number for this set P. Therefore, if these 11 points of Figure 1 are given as input of your program, then your program must output 4 as the answer.<\/p>\r\n","input":"<p>Your program is to read from standard input. The input consists of T test cases. The number of test cases T is given in the first line of the input. Each test case starts with a line containing an integer, n (1 &le; n &le; 100,000), where n is the number of points in the data set P. In the following n lines, each of the n points in P is given line by line. Each point is represented by two numbers separated by a single space, which are the x-coordinate and the y-coordinate of the point, respectively. Each coordinate is given as an integer between &minus;1,000,000,000 and 1,000,000,000, inclusively. Note that there may be two or more points having the same coordinates in the input data set P.<\/p>\r\n","output":"<p>Your program is to write to standard output. Print exactly one line for each test case. The line should contain an integer representing the smallest 3SQ-sufficient integer for a given input set P of points.&nbsp;<\/p>\r\n","hint":"","original":"1","problem_lang_code":"\uc601\uc5b4"}]

출처

ACM-ICPC > Regionals > Asia > Korea > Asia Regional - Daejeon 2014 I번