시간 제한 메모리 제한 제출 정답 맞은 사람 정답 비율
2 초 512 MB 2 1 1 50.000%

문제

당신의 물류 창고가 너무 지저분해서 청소를 하려고 청소 로봇을 구입했다. 물류 창고는 테이블 (그리드) 모양이며 총 R행 C열로 구성되어있다. 각 행 각 열에는 엄청나게 거대한 물류 선반이 있으며 사람이 청소할 수 없을 만큼 방대하다. 아래 예는 4행 6열로 구성된 물류창고를 나타낸다.

당신은 상/하/좌/우로만 이동 할 수 있는 청소 로봇을 r행 c열에 배치하고, 이 로봇이 모든 선반을 딱 한 번씩만 방문하여 청소할 수 있는지 알고 싶다. 

예를 들어 R = 4, C = 6, r = 3, c = 2인 경우 로봇을 3행 2열 (위에서 세 번째 좌에서 두 번째)에 배치한 경우 로봇이 아래 그림과 같은 순서로 1~24번째 칸을 방문하며 모든 선반을 한 번씩 청소할 수 있다. 이 로봇의 이동 경로는 상(U)하(D)좌(L)우(R) 표현 방식을 통해 길이가 23일 문자열로도 표현 가능하다: “URDDRRRULLURRULLLLLDDDR”.

어떤 경우에는 로봇이 모든 칸을 정확히 한 번씩 방문하는 것이 불가능 할 수 있다. 가령 R = 3, C = 3, r = 1, c = 2 인 경우, 모든 칸을 정확히 한 번씩만 방문할 수 있는 방법이 존재하지 않는다.

R, C, r, c가 주어졌을 때 청소 로봇이 모든 칸을 딱 한 번씩만 방문하여 선반을 청소하는 것이 가능한지 결정하는 프로그램을 작성하시오. 만약 가능하다면 로봇이 어떻게 움직여야 하는지 상/하/좌/우 표현 방식을 이용하여 출력하시오. 로봇은 상/하/좌/우로만 이동 가능하며 물류창고 밖으로 나갈 수 없다.

입력

첫 줄에 테스트 케이스의 수 T가 주어진다 (1 <= T <= 100).

각 테스트 케이스는 한 줄에 주어지며 R, C, r, c 네 개의 정수가 공백으로 구분되어 주어진다.

모든 테스트 케이스는 다음을 만족한다: 1 <= R, C <= 100 그리고 1 <= r <= R 그리고 1 <= c <= C. 마지막으로, R*C는 항상 1을 초과하는 값이다 (물류창고에는 언제나 선반이 하나 보다 많다).

출력

각 테스트 케이스에 대해 한 줄에 문자열 하나를 출력해야 한다.

만약 모든 칸을 딱 한 번씩 방문하는 것이 불가능 하면 “IMPOSSIBLE” (따옴표 제외)을 출력한다.

가능한 경우, 길이가 (R*C)-1인 문자열을 이용하여 로봇의 이동 경로를 상(U)/하(D)/좌(L)/우(R)을 이용하여 출력한다. 상하좌우 순서대로 로봇이 위로 (행의 번호가 낮아짐), 아래로 (행의 번호가 높아짐), 왼쪽으로 (열의 번호가 낮아짐), 오른쪽으로 (열의 번호가 높아짐) 움직이는 것을 나타낸다.

서브태스크 1 (10점)

  • 1 <= R, C <= 5

서브태스크 2 (21점)

  • 1 <= R, C <= 100

예제 입력 1

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

예제 출력 1

RDL
IMPOSSIBLE
LURRDDLL
IMPOSSIBLE
RDLLUURRRDDRRULURULLLLL
IMPOSSIBLE

힌트

첫 예제의 경우 “DRU” 도 정답이다.

두 번째 예제의 경우 모든 칸을 정확히 한 번씩 방문하는 것은 불가능하다.

세 번째 예제의 경우 정답이 여럿 존재하는데 그 중 무엇을 출력해도 무방하다.

네 번째 예제는 불가능하다.

다섯 번째 예제는 정답이 여럿 존재하며, 다른 정답이 문제에서 예시로 언급되었다.

마지막 예제는 불가능하다.

문제의 정답이 여러가지인 경우에는 스페셜 저지로 채점을 하게 됩니다. 스페셜 저지는 유저가 출력한 답을 검증하는 코드를 통해서 정답 유무를 결정하는 방식입니다.

[{"problem_id":"17145","problem_lang":"0","title":"\uccad\uc18c \ub85c\ubd07","description":"<p>\ub2f9\uc2e0\uc758 \ubb3c\ub958 \ucc3d\uace0\uac00 \ub108\ubb34 \uc9c0\uc800\ubd84\ud574\uc11c \uccad\uc18c\ub97c \ud558\ub824\uace0 \uccad\uc18c \ub85c\ubd07\uc744 \uad6c\uc785\ud588\ub2e4. \ubb3c\ub958 \ucc3d\uace0\ub294 \ud14c\uc774\ube14 (\uadf8\ub9ac\ub4dc) \ubaa8\uc591\uc774\uba70 \ucd1d R\ud589 C\uc5f4\ub85c \uad6c\uc131\ub418\uc5b4\uc788\ub2e4. \uac01 \ud589 \uac01 \uc5f4\uc5d0\ub294 \uc5c4\uccad\ub098\uac8c \uac70\ub300\ud55c \ubb3c\ub958 \uc120\ubc18\uc774 \uc788\uc73c\uba70 \uc0ac\ub78c\uc774 \uccad\uc18c\ud560 \uc218 \uc5c6\uc744 \ub9cc\ud07c \ubc29\ub300\ud558\ub2e4. \uc544\ub798 \uc608\ub294 4\ud589 6\uc5f4\ub85c \uad6c\uc131\ub41c \ubb3c\ub958\ucc3d\uace0\ub97c \ub098\ud0c0\ub0b8\ub2e4.<\/p>\r\n\r\n<p style=\"text-align: center;\"><img alt=\"\" src=\"https:\/\/upload.acmicpc.net\/0a3473aa-8ebc-421c-8d03-9123148d804c\/-\/preview\/\" style=\"height: 150px; width: 217px;\" \/><\/p>\r\n\r\n<p>\ub2f9\uc2e0\uc740 \uc0c1\/\ud558\/\uc88c\/\uc6b0\ub85c\ub9cc \uc774\ub3d9 \ud560 \uc218 \uc788\ub294 \uccad\uc18c \ub85c\ubd07\uc744 r\ud589 c\uc5f4\uc5d0 \ubc30\uce58\ud558\uace0, \uc774 \ub85c\ubd07\uc774 \ubaa8\ub4e0 \uc120\ubc18\uc744 \ub531 \ud55c \ubc88\uc529\ub9cc \ubc29\ubb38\ud558\uc5ec \uccad\uc18c\ud560 \uc218 \uc788\ub294\uc9c0 \uc54c\uace0 \uc2f6\ub2e4.&nbsp;<\/p>\r\n\r\n<p>\uc608\ub97c \ub4e4\uc5b4 R = 4, C = 6, r = 3, c = 2\uc778 \uacbd\uc6b0 \ub85c\ubd07\uc744 3\ud589 2\uc5f4 (\uc704\uc5d0\uc11c \uc138 \ubc88\uc9f8 \uc88c\uc5d0\uc11c \ub450 \ubc88\uc9f8)\uc5d0 \ubc30\uce58\ud55c \uacbd\uc6b0 \ub85c\ubd07\uc774 \uc544\ub798 \uadf8\ub9bc\uacfc \uac19\uc740 \uc21c\uc11c\ub85c 1~24\ubc88\uc9f8 \uce78\uc744 \ubc29\ubb38\ud558\uba70 \ubaa8\ub4e0 \uc120\ubc18\uc744 \ud55c \ubc88\uc529 \uccad\uc18c\ud560 \uc218 \uc788\ub2e4. \uc774 \ub85c\ubd07\uc758 \uc774\ub3d9 \uacbd\ub85c\ub294 \uc0c1(U)\ud558(D)\uc88c(L)\uc6b0(R) \ud45c\ud604 \ubc29\uc2dd\uc744 \ud1b5\ud574 \uae38\uc774\uac00 23\uc77c \ubb38\uc790\uc5f4\ub85c\ub3c4 \ud45c\ud604 \uac00\ub2a5\ud558\ub2e4: &ldquo;URDDRRRULLURRULLLLLDDDR&rdquo;.<\/p>\r\n\r\n<p style=\"text-align: center;\"><img alt=\"\" src=\"https:\/\/upload.acmicpc.net\/770fa406-68e8-4dfc-92fc-9c6c96318096\/-\/preview\/\" style=\"width: 219px; height: 150px;\" \/><\/p>\r\n\r\n<p>\uc5b4\ub5a4 \uacbd\uc6b0\uc5d0\ub294 \ub85c\ubd07\uc774 \ubaa8\ub4e0 \uce78\uc744 \uc815\ud655\ud788 \ud55c \ubc88\uc529 \ubc29\ubb38\ud558\ub294 \uac83\uc774 \ubd88\uac00\ub2a5 \ud560 \uc218 \uc788\ub2e4. \uac00\ub839 R = 3, C = 3, r = 1, c = 2 \uc778 \uacbd\uc6b0, \ubaa8\ub4e0 \uce78\uc744 \uc815\ud655\ud788 \ud55c \ubc88\uc529\ub9cc \ubc29\ubb38\ud560 \uc218 \uc788\ub294 \ubc29\ubc95\uc774 \uc874\uc7ac\ud558\uc9c0 \uc54a\ub294\ub2e4.<\/p>\r\n\r\n<p>R, C, r, c\uac00 \uc8fc\uc5b4\uc84c\uc744 \ub54c \uccad\uc18c \ub85c\ubd07\uc774 \ubaa8\ub4e0 \uce78\uc744 \ub531 \ud55c \ubc88\uc529\ub9cc \ubc29\ubb38\ud558\uc5ec \uc120\ubc18\uc744 \uccad\uc18c\ud558\ub294 \uac83\uc774 \uac00\ub2a5\ud55c\uc9c0 \uacb0\uc815\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc744 \uc791\uc131\ud558\uc2dc\uc624. \ub9cc\uc57d \uac00\ub2a5\ud558\ub2e4\uba74 \ub85c\ubd07\uc774 \uc5b4\ub5bb\uac8c \uc6c0\uc9c1\uc5ec\uc57c \ud558\ub294\uc9c0 \uc0c1\/\ud558\/\uc88c\/\uc6b0 \ud45c\ud604 \ubc29\uc2dd\uc744 \uc774\uc6a9\ud558\uc5ec \ucd9c\ub825\ud558\uc2dc\uc624. \ub85c\ubd07\uc740 \uc0c1\/\ud558\/\uc88c\/\uc6b0\ub85c\ub9cc \uc774\ub3d9 \uac00\ub2a5\ud558\uba70 \ubb3c\ub958\ucc3d\uace0 \ubc16\uc73c\ub85c \ub098\uac08 \uc218 \uc5c6\ub2e4.<\/p>\r\n","input":"<p>\uccab \uc904\uc5d0 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uc218 T\uac00 \uc8fc\uc5b4\uc9c4\ub2e4 (1 &lt;= T &lt;= 100).<\/p>\r\n\r\n<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub294 \ud55c \uc904\uc5d0 \uc8fc\uc5b4\uc9c0\uba70 R, C, r, c \ub124 \uac1c\uc758 \uc815\uc218\uac00 \uacf5\ubc31\uc73c\ub85c \uad6c\ubd84\ub418\uc5b4 \uc8fc\uc5b4\uc9c4\ub2e4.<\/p>\r\n\r\n<p>\ubaa8\ub4e0 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub294 \ub2e4\uc74c\uc744 \ub9cc\uc871\ud55c\ub2e4: 1 &lt;= R, C &lt;= 100 \uadf8\ub9ac\uace0 1 &lt;= r &lt;= R \uadf8\ub9ac\uace0 1 &lt;= c &lt;= C. \ub9c8\uc9c0\ub9c9\uc73c\ub85c, R*C\ub294 \ud56d\uc0c1 1\uc744 \ucd08\uacfc\ud558\ub294 \uac12\uc774\ub2e4 (\ubb3c\ub958\ucc3d\uace0\uc5d0\ub294 \uc5b8\uc81c\ub098 \uc120\ubc18\uc774 \ud558\ub098 \ubcf4\ub2e4 \ub9ce\ub2e4).<\/p>\r\n","output":"<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc5d0 \ub300\ud574 \ud55c \uc904\uc5d0 \ubb38\uc790\uc5f4 \ud558\ub098\ub97c \ucd9c\ub825\ud574\uc57c \ud55c\ub2e4.<\/p>\r\n\r\n<p>\ub9cc\uc57d \ubaa8\ub4e0 \uce78\uc744 \ub531 \ud55c \ubc88\uc529 \ubc29\ubb38\ud558\ub294 \uac83\uc774 \ubd88\uac00\ub2a5 \ud558\uba74 &ldquo;IMPOSSIBLE&rdquo; (\ub530\uc634\ud45c \uc81c\uc678)\uc744 \ucd9c\ub825\ud55c\ub2e4.<\/p>\r\n\r\n<p>\uac00\ub2a5\ud55c \uacbd\uc6b0, \uae38\uc774\uac00 (R*C)-1\uc778 \ubb38\uc790\uc5f4\uc744 \uc774\uc6a9\ud558\uc5ec \ub85c\ubd07\uc758 \uc774\ub3d9 \uacbd\ub85c\ub97c \uc0c1(U)\/\ud558(D)\/\uc88c(L)\/\uc6b0(R)\uc744 \uc774\uc6a9\ud558\uc5ec \ucd9c\ub825\ud55c\ub2e4. \uc0c1\ud558\uc88c\uc6b0 \uc21c\uc11c\ub300\ub85c \ub85c\ubd07\uc774 \uc704\ub85c (\ud589\uc758 \ubc88\ud638\uac00 \ub0ae\uc544\uc9d0), \uc544\ub798\ub85c (\ud589\uc758 \ubc88\ud638\uac00 \ub192\uc544\uc9d0), \uc67c\ucabd\uc73c\ub85c (\uc5f4\uc758 \ubc88\ud638\uac00 \ub0ae\uc544\uc9d0), \uc624\ub978\ucabd\uc73c\ub85c (\uc5f4\uc758 \ubc88\ud638\uac00 \ub192\uc544\uc9d0) \uc6c0\uc9c1\uc774\ub294 \uac83\uc744 \ub098\ud0c0\ub0b8\ub2e4.<\/p>\r\n","hint":"<p>\uccab \uc608\uc81c\uc758 \uacbd\uc6b0 &ldquo;DRU&rdquo; \ub3c4 \uc815\ub2f5\uc774\ub2e4.<\/p>\r\n\r\n<p>\ub450 \ubc88\uc9f8 \uc608\uc81c\uc758 \uacbd\uc6b0 \ubaa8\ub4e0 \uce78\uc744 \uc815\ud655\ud788 \ud55c \ubc88\uc529 \ubc29\ubb38\ud558\ub294 \uac83\uc740 \ubd88\uac00\ub2a5\ud558\ub2e4.<\/p>\r\n\r\n<p>\uc138 \ubc88\uc9f8 \uc608\uc81c\uc758 \uacbd\uc6b0 \uc815\ub2f5\uc774 \uc5ec\ub7ff \uc874\uc7ac\ud558\ub294\ub370 \uadf8 \uc911 \ubb34\uc5c7\uc744 \ucd9c\ub825\ud574\ub3c4 \ubb34\ubc29\ud558\ub2e4.<\/p>\r\n\r\n<p>\ub124 \ubc88\uc9f8 \uc608\uc81c\ub294 \ubd88\uac00\ub2a5\ud558\ub2e4.<\/p>\r\n\r\n<p>\ub2e4\uc12f \ubc88\uc9f8 \uc608\uc81c\ub294 \uc815\ub2f5\uc774 \uc5ec\ub7ff \uc874\uc7ac\ud558\uba70, \ub2e4\ub978 \uc815\ub2f5\uc774 \ubb38\uc81c\uc5d0\uc11c \uc608\uc2dc\ub85c \uc5b8\uae09\ub418\uc5c8\ub2e4.<\/p>\r\n\r\n<p>\ub9c8\uc9c0\ub9c9 \uc608\uc81c\ub294 \ubd88\uac00\ub2a5\ud558\ub2e4.<\/p>\r\n\r\n<p>\ubb38\uc81c\uc758 \uc815\ub2f5\uc774 \uc5ec\ub7ec\uac00\uc9c0\uc778 \uacbd\uc6b0\uc5d0\ub294 \uc2a4\ud398\uc15c \uc800\uc9c0\ub85c \ucc44\uc810\uc744 \ud558\uac8c \ub429\ub2c8\ub2e4. \uc2a4\ud398\uc15c \uc800\uc9c0\ub294 \uc720\uc800\uac00 \ucd9c\ub825\ud55c \ub2f5\uc744 \uac80\uc99d\ud558\ub294 \ucf54\ub4dc\ub97c \ud1b5\ud574\uc11c \uc815\ub2f5 \uc720\ubb34\ub97c \uacb0\uc815\ud558\ub294 \ubc29\uc2dd\uc785\ub2c8\ub2e4.<\/p>\r\n","original":"1","problem_lang_code":"\ud55c\uad6d\uc5b4","subtask1":"<ul>\r\n\t<li>1 &lt;= R, C &lt;= 5<\/li>\r\n<\/ul>\r\n","subtask2":"<ul>\r\n\t<li>1 &lt;= R, C &lt;= 100<\/li>\r\n<\/ul>\r\n"},{"problem_id":"17145","problem_lang":"1","title":"Cleaning Robot","description":"<p>Albert&rsquo;s warehouse is rectangle-shaped, and it consists of R rows and C columns; each cell contains a massive shelf that can only be cleaned by a robot.<\/p>\r\n\r\n<p>The example figure below shows a table with 4 rows and 6 columns.<\/p>\r\n\r\n<p style=\"text-align: center;\"><img alt=\"\" src=\"https:\/\/upload.acmicpc.net\/0a3473aa-8ebc-421c-8d03-9123148d804c\/-\/preview\/\" style=\"height: 150px; width: 217px;\" \/><\/p>\r\n\r\n<p>Albert will place his smart cleaning robot at row r and column c, and the robot will first scan the entire warehouse, and will determine whether it will be possible to visit (and clean up) each shelf exactly once while only moving by up\/down\/left\/right.&nbsp;<\/p>\r\n\r\n<p>For instance, suppose that R = 4, C = 6, r = 3, and c = 2. Starting from the cell at row 3 and column 2, Albert&rsquo;s robot can visit all 24 cells only by moving Up\/Down\/Left\/right, as shown in the figure below. Alternatively, this order can be concisely described by the direction at which the robot moves: &ldquo;URDDRRRULLURRULLLLLDDDR&rdquo; (23 moves).<\/p>\r\n\r\n<p style=\"text-align: center;\"><img alt=\"\" src=\"https:\/\/upload.acmicpc.net\/770fa406-68e8-4dfc-92fc-9c6c96318096\/-\/preview\/\" style=\"width: 219px; height: 150px;\" \/><\/p>\r\n\r\n<p>However, it is not always possible to visit all cells of the board. For instance, when R = 3, C = 3, r = 1, and c = 2, there is no way to visit all nine cells exactly once.&nbsp;<\/p>\r\n\r\n<p>Given R, C, r, and c, you must help Albert by determining whether the robot will be able to clean up each shelf exactly once. If it is possible, then you should also output how it can be done. The robot can only move up\/down\/left\/right and it cannot go out of the warehouse.<\/p>\r\n","input":"<p>The first line will contain an integer T (1 &lt;= T &lt;= 100), the number of test cases.<\/p>\r\n\r\n<p>Each of the following T lines will contain four integers separated by a white space, representing R, C, r, and c in this order. You can assume that 1 &lt;= R, C &lt;= 100 and 1 &lt;= r &lt;= R and 1 &lt;= c &lt;= C. You can further assume that R*C &gt; 1 (i.e., the warehouse always contains more than one shelf).<\/p>\r\n","output":"<p>For each test case, you must output one string in a single line.<\/p>\r\n\r\n<p>If it is impossible to visit each shelf exactly once, then you should output &ldquo;IMPOSSIBLE&rdquo; (without quotes). Otherwise, you should output a string of length (R*C)-1, which describes how the robot should move (each character must be one of U, D, L, R describing the direction at which the robot moves). U means going up (by decrementing the row number), D means going down (by incrementing the row number), L means going left (by decrementing the column number), and R means going right (by incrementing the column number).&nbsp;<\/p>\r\n","hint":"<p>For the first test case, another correct answer is: DRU.<\/p>\r\n\r\n<p>For the second case, it is impossible to visit all cells exactly once.<\/p>\r\n\r\n<p>For the third case, there exist many correct answers, and you may output any one of them.<\/p>\r\n\r\n<p>For the fourth case, it is impossible.<\/p>\r\n\r\n<p>For the fifth case, there exist many correct answers, and one of them was described in the problem statement.&nbsp;<\/p>\r\n\r\n<p>For the last case, it&rsquo;s impossible.<\/p>\r\n\r\n<p>If a problem admits multiple correct answers (outputs), then all submissions for the said problem will be evaluated by a special judge program. The special judge is a separate program that will determine correctness of your program&rsquo;s output.<\/p>\r\n","original":"0","problem_lang_code":"\uc601\uc5b4","subtask1":"<ul>\r\n\t<li>1 &lt;= R, C &lt;= 5<\/li>\r\n<\/ul>\r\n","subtask2":"<ul>\r\n\t<li>1 &lt;= R, C &lt;= 100<\/li>\r\n<\/ul>\r\n"}]

채점

  • 예제는 채점하지 않는다.