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문제

피타고리안 트리플은 a2 + b2 = c2을 만족하는 양의 정수 세 개 a, b, c로 이루어져 있고, (a, b, c)로 나타낸다. 피타고리안 트리플 (a, b, c)는 두 정수 x와 y (x > y > 0)을 이용해서 만들 수 있다. a = 2xy, b = x2-y2, c = x2+y2.

ℝ = {R1, R2, ..., Ri, ...} 은 직사각형으로 이루어진 집합이다. Ri의 너비는 wi, 높이는 hi이고, 대각선의 길이는 di이다. ℝ에 포함되는 모든 직사각형이 다음과 같은 조건을 만족하는 경우 "피타고리안 기초 직사각형 집합" 이라고 한다.

  • (wi, hi, di)는 피타고리안 트리플이어야 한다.
  • wi < hi
  • hi/wi ≠ hj/wj if i ≠ j

피타고라스 고등학교에 재학중인 창영이는 길이가 L인 철사를 가지고 놀려고 한다. 창영이는 철사를 잘라서 조각으로 만들고, 각 조각을 구부려서 직사각형을 만드려고 한다. 이 때, 창영이가 만든 직사각형의 집합은 "피타고리안 기초 직사각형 집합"이어야 한다. Ri를 만드는데 필요한 철사의 길이는 2(wi + hi)이다.

Ri를 너비와 높이의 쌍 (wi, hi)로 나타낸다고 하자. L이 94인 경우에 창영이는 직사각형 3개를 만들 수 있다. ℝ = {(3, 4), (5, 12), (8, 15)}. 만약, 직사각형을 ℝ = {(3, 4), (7, 24)} 와 같이 만든다면, 창영이는 직사각형 2개를 만들 수 있다.

L이 주어졌을 때, 창영이가 만들 수 있는 직사각형 개수의 최대값을 구하는 프로그램을 작성하시오. 직사각형은 "피타고리안 기초 직사각형 집합" 이어야 한다.

입력

첫째 줄에 테스트 케이스의 개수 T가 주어진다. 각 테스트 케이스는 한 줄로 이루어져 있고, 철사의 길이 L이 주어진다. (14 ≤ L ≤ 1,000,000)

출력

각 테스트 케이스마다 길이가 L인 전선으로 창영이가 만들 수 있는 직사각형 개수의 최대값을 출력한다. 

예제 입력 1

2
14
1000

예제 출력 1

1
10
[{"problem_id":"9464","problem_lang":"0","title":"\uc9c1\uc0ac\uac01\ud615 \uc9d1\ud569","description":"<p>\ud53c\ud0c0\uace0\ub9ac\uc548 \ud2b8\ub9ac\ud50c\uc740 a<sup>2<\/sup> + b<sup>2<\/sup> = c<sup>2<\/sup>\uc744 \ub9cc\uc871\ud558\ub294 \uc591\uc758 \uc815\uc218 \uc138 \uac1c a, b, c\ub85c \uc774\ub8e8\uc5b4\uc838 \uc788\uace0, (a, b, c)\ub85c \ub098\ud0c0\ub0b8\ub2e4. \ud53c\ud0c0\uace0\ub9ac\uc548 \ud2b8\ub9ac\ud50c (a, b, c)\ub294 \ub450 \uc815\uc218 x\uc640 y (x &gt; y &gt; 0)\uc744 \uc774\uc6a9\ud574\uc11c \ub9cc\ub4e4 \uc218 \uc788\ub2e4. a = 2xy, b = x<sup>2<\/sup>-y<sup>2<\/sup>, c = x<sup>2<\/sup>+y<sup>2<\/sup>.<\/p>\r\n\r\n<p>\u211d = {R<sub>1<\/sub>, R<sub>2<\/sub>, ..., R<sub>i<\/sub>, ...} \uc740 \uc9c1\uc0ac\uac01\ud615\uc73c\ub85c \uc774\ub8e8\uc5b4\uc9c4 \uc9d1\ud569\uc774\ub2e4. R<sub>i<\/sub>\uc758 \ub108\ube44\ub294 w<sub>i<\/sub>, \ub192\uc774\ub294 h<sub>i<\/sub>\uc774\uace0, \ub300\uac01\uc120\uc758 \uae38\uc774\ub294 d<sub>i<\/sub>\uc774\ub2e4. \u211d\uc5d0 \ud3ec\ud568\ub418\ub294 \ubaa8\ub4e0 \uc9c1\uc0ac\uac01\ud615\uc774 \ub2e4\uc74c\uacfc \uac19\uc740 \uc870\uac74\uc744 \ub9cc\uc871\ud558\ub294 \uacbd\uc6b0 &quot;\ud53c\ud0c0\uace0\ub9ac\uc548 \uae30\ucd08 \uc9c1\uc0ac\uac01\ud615 \uc9d1\ud569&quot; \uc774\ub77c\uace0 \ud55c\ub2e4.<\/p>\r\n\r\n<ul>\r\n\t<li>(w<sub>i<\/sub>, h<sub>i<\/sub>, d<sub>i<\/sub>)\ub294 \ud53c\ud0c0\uace0\ub9ac\uc548 \ud2b8\ub9ac\ud50c\uc774\uc5b4\uc57c \ud55c\ub2e4.<\/li>\r\n\t<li>w<sub>i<\/sub> &lt; h<sub>i<\/sub><\/li>\r\n\t<li>h<sub>i<\/sub>\/w<sub>i<\/sub> &ne; h<sub>j<\/sub>\/w<sub>j<\/sub> if i &ne; j<\/li>\r\n<\/ul>\r\n\r\n<p>\ud53c\ud0c0\uace0\ub77c\uc2a4 \uace0\ub4f1\ud559\uad50\uc5d0 \uc7ac\ud559\uc911\uc778 \ucc3d\uc601\uc774\ub294 \uae38\uc774\uac00 L\uc778 \ucca0\uc0ac\ub97c \uac00\uc9c0\uace0 \ub180\ub824\uace0 \ud55c\ub2e4. \ucc3d\uc601\uc774\ub294 \ucca0\uc0ac\ub97c \uc798\ub77c\uc11c \uc870\uac01\uc73c\ub85c \ub9cc\ub4e4\uace0, \uac01 \uc870\uac01\uc744&nbsp;\uad6c\ubd80\ub824\uc11c \uc9c1\uc0ac\uac01\ud615\uc744 \ub9cc\ub4dc\ub824\uace0 \ud55c\ub2e4. \uc774 \ub54c, \ucc3d\uc601\uc774\uac00 \ub9cc\ub4e0 \uc9c1\uc0ac\uac01\ud615\uc758 \uc9d1\ud569\uc740 &quot;\ud53c\ud0c0\uace0\ub9ac\uc548 \uae30\ucd08 \uc9c1\uc0ac\uac01\ud615 \uc9d1\ud569&quot;\uc774\uc5b4\uc57c \ud55c\ub2e4. R<sub>i<\/sub>\ub97c \ub9cc\ub4dc\ub294\ub370 \ud544\uc694\ud55c \ucca0\uc0ac\uc758 \uae38\uc774\ub294 2(w<sub>i<\/sub> + h<sub>i<\/sub>)\uc774\ub2e4.<\/p>\r\n\r\n<p>R<sub>i<\/sub>\ub97c \ub108\ube44\uc640 \ub192\uc774\uc758 \uc30d (w<sub>i<\/sub>, h<sub>i<\/sub>)\ub85c \ub098\ud0c0\ub0b8\ub2e4\uace0 \ud558\uc790. L\uc774 94\uc778 \uacbd\uc6b0\uc5d0 \ucc3d\uc601\uc774\ub294 \uc9c1\uc0ac\uac01\ud615 3\uac1c\ub97c \ub9cc\ub4e4 \uc218 \uc788\ub2e4. \u211d = {(3, 4), (5, 12), (8, 15)}. \ub9cc\uc57d, \uc9c1\uc0ac\uac01\ud615\uc744 \u211d = {(3, 4), (7, 24)} \uc640 \uac19\uc774 \ub9cc\ub4e0\ub2e4\uba74, \ucc3d\uc601\uc774\ub294 \uc9c1\uc0ac\uac01\ud615 2\uac1c\ub97c \ub9cc\ub4e4 \uc218 \uc788\ub2e4.<\/p>\r\n\r\n<p>L\uc774 \uc8fc\uc5b4\uc84c\uc744 \ub54c, \ucc3d\uc601\uc774\uac00 \ub9cc\ub4e4 \uc218 \uc788\ub294 \uc9c1\uc0ac\uac01\ud615 \uac1c\uc218\uc758 \ucd5c\ub300\uac12\uc744 \uad6c\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc744 \uc791\uc131\ud558\uc2dc\uc624. \uc9c1\uc0ac\uac01\ud615\uc740 &quot;\ud53c\ud0c0\uace0\ub9ac\uc548 \uae30\ucd08 \uc9c1\uc0ac\uac01\ud615 \uc9d1\ud569&quot; \uc774\uc5b4\uc57c \ud55c\ub2e4.<\/p>\r\n","input":"<p>\uccab\uc9f8 \uc904\uc5d0 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uac1c\uc218 T\uac00 \uc8fc\uc5b4\uc9c4\ub2e4. \uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub294 \ud55c \uc904\ub85c \uc774\ub8e8\uc5b4\uc838 \uc788\uace0, \ucca0\uc0ac\uc758 \uae38\uc774 L\uc774 \uc8fc\uc5b4\uc9c4\ub2e4. (14 &le; L &le; 1,000,000)<\/p>\r\n","output":"<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub9c8\ub2e4 \uae38\uc774\uac00 L\uc778 \uc804\uc120\uc73c\ub85c \ucc3d\uc601\uc774\uac00 \ub9cc\ub4e4 \uc218 \uc788\ub294 \uc9c1\uc0ac\uac01\ud615 \uac1c\uc218\uc758 \ucd5c\ub300\uac12\uc744 \ucd9c\ub825\ud55c\ub2e4.&nbsp;<\/p>\r\n","hint":"","original":"0","problem_lang_code":"\ud55c\uad6d\uc5b4"},{"problem_id":"9464","problem_lang":"1","title":"Set of Rectangles","description":"<p>A Pythagorean triple consists of three positive integers, a, b, and c, such that a<sup>2<\/sup> + b<sup>2<\/sup> = c<sup>2<\/sup>. Such a triple is commonly written (a, b, c). A Pythagorean triple (a, b, c) can be generated by two integers x and y (x &gt; y &gt; 0) by setting a = 2xy, b = x<sup>2<\/sup> - y<sup>2<\/sup>, and c = x<sup>2<\/sup> + y<sup>2<\/sup>.<\/p>\r\n\r\n<p>\u211d = {R<sub>1<\/sub>, R<sub>2<\/sub>, &hellip;, R<sub>i<\/sub>, &hellip;} is a set of rectangles. Let w<sub>i<\/sub> and h<sub>i<\/sub> denote the width and height of rectangle R<sub>i<\/sub>, respectively. Also, let d<sub>i<\/sub> denote the length of R<sub>i<\/sub>&rsquo;s diagonal. A rectangle set \u211d is called a &lsquo;Pythagorean Primitive Rectangle Set&rsquo; if each rectangle R<sub>i<\/sub> in \u211d holds following constraints:&nbsp;<\/p>\r\n\r\n<ol>\r\n\t<li>(w<sub>i<\/sub>, h<sub>i<\/sub>, d<sub>i<\/sub>) is a Pythagorean triple;&nbsp;<\/li>\r\n\t<li>w<sub>i<\/sub> &lt; h<sub>i<\/sub>;<\/li>\r\n\t<li>h<sub>i<\/sub>\/w<sub>i<\/sub> &ne; h<sub>j<\/sub>\/w<sub>j<\/sub> if i &ne; j.<\/li>\r\n<\/ol>\r\n\r\n<p>Bill, a freshman in Pythagoras Memorial High School, got homework in his mathematics class. His homework is described as follows. Given a wire of length L, he should cut it into pieces and bend each piece of the wire to form a rectangle such that the set of rectangles obtained by the cut pieces should be a Pythagorean Primitive Rectangle Set. Note that a piece of length 2(w<sub>i<\/sub> + h<sub>i<\/sub>) is required to make rectangle R<sub>i<\/sub>. For example, if rectangle R<sub>i<\/sub> is represented as a pair of its width and its height, (w<sub>i<\/sub>, h<sub>i<\/sub>), and if the total length of the given wire is 94, Bill can cut it into 3 pieces and make a Pythagorean Primitive Rectangle Set, \u211d={(3,4), (5,12), (8,15)}. With the same wire of length 94, Bill can also make another Pythagorean Primitive Rectangle Set, \u211d={(3,4), (7,24)} in which case there remains a leftover piece. In other words, Bill does not need to use up all the wire to make a Pythagorean Primitive Rectangle Set.&nbsp;<\/p>\r\n\r\n<p>Given a wire of length L, Bill wants to make as many rectangles as possible which are the members of a Pythagorean Primitive Rectangle Set. You are asked to make a program to help Bill.&nbsp;<\/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 has a single integer L (14 &le; L &le; 1,000,000), the total length of a wire to be cut into pieces.&nbsp;<\/p>\r\n","output":"<p>Your program is to write to standard output. Print exactly one line for each test case. The line should show the maximum number of rectangles which can be made by the wire of length L as described above.<\/p>\r\n","hint":"","original":"1","problem_lang_code":"\uc601\uc5b4"}]

출처

ACM-ICPC > Regionals > Asia > Korea > Asia Regional - Daejeon 2013 J번

  • 문제를 번역한 사람: baekjoon
  • 문제의 오타를 찾은 사람: hihihi