시간 제한메모리 제한제출정답맞힌 사람정답 비율
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문제

은기는 술병 N개(1부터 N까지 번호가 매겨져 있다)와 서랍 L개(1부터 L까지 번호가 매겨져 있다)를 가지고 있다. 술병은 은기의 방 바닥에 흩어져 있고, 어린이날을 맞이해 방 청소를 하려고 한다.  서랍에는 술병이 하나 들어갈 수 있다. 나중에 원하는 술을 빠르게 찾을 수 있게 하기 위해 은기는 각각의 술병이 들어갈 수 있는 서랍의 번호 Ai와 Bi를 공책에 적어 놓았다.

은기는 술병을 1번부터 N번까지 순서대로 정리할 것이고, 각각의 술병에 대해서 다음과 같은 과정을 거친다.

  1. 서랍 Ai가 비어있다면, i번 술을 그 서랍에 보관한다.
  2. 서랍 Bi가 비어있다면, i번 술을 그 서랍에 보관한다.
  3. Ai에 들어있는 술을 다른 서랍으로 이동시킨다.(다른 서랍은 Ai에 들어있는 술이 들어갈 수 있는 서랍 중 하나이다) 만약, 그 서랍에도 이미 술이 들어있다면, 그 술을 다른 서랍으로 이동시킨다. 이런 과정을 거쳐서 빈 서랍을 하나 찾아 술을 모두 이동할 수 있는 경우에는, 술을 이동시키고 i번 술을 Ai에 보관한다. 불가능한 경우에는 다음 규칙으로 넘어간다.
  4. Bi에 들어있는 술을 다른 서랍으로 이동시킨다. 만약, 그 서랍에도 이미 술이 들어있다면, 그 술을 다른 서랍으로 이동시킨다. 이런 과정을 거쳐서 빈 서랍을 하나 찾아 술을 모두 이동할 수 있는 경우에는, 술을 이동시키고 i번 술을 Bi에 보관한다. 불가능한 경우에는 다음 규칙으로 넘어간다.
  5. 위의 과정이 모두 불가능한 경우에는 i번 술을 그 자리에서 마셔버린다. (은기는 전혀 취하지 않는다)

각각의 술에 대해서, 서랍에 보관할 수 있는지, 그 자리에서 마셔버리는지를 구하는 프로그램을 작성하시오.

입력

첫째 줄에 N과 L이 주어진다. (1 ≤ N, L ≤ 300,000)

다음 N개 줄에는 Ai와 Bi가 주어진다. (1 ≤ Ai, Bi ≤ L, Ai ≠ Bi)

출력

1번 술부터 N번 술까지 순서대로 보관할 수 있는지, 그 자리에서 먹어야 하는지를 출력한다.

보관할 수 있는 경우에는 "LADICA"를, 먹어버려야 하는 경우에는 "SMECE"를 출력한다.

예제 입력 1

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

예제 출력 1

LADICA
LADICA
LADICA
LADICA
LADICA
LADICA
LADICA
LADICA
LADICA

힌트

처음 6개의 술은 규칙 1에 의해서 1, 3, 5, 7, 9, 2번 서랍에 보관할 수 있다.

7번째 술은 규칙 3을 적용할 수 있다. 1번 서랍에 들어있는 술을 2로, 2번 서랍에 들어있는 술을 3으로, 3번 서랍에 들어있는 술을 4번으로 옮길 수 있다.

8번째 술은 8번 서랍에 넣을 수 있다.

9번째 술은 규칙 3을 적용할 수 있다. 서랍 7에 들어있는 술을 8로, 8에 들어있는 술은 2로, 2에 들어있는 술을 1로, 1에 들어있는 술을 5로, 5에 들어있는 술을 6으로 옮길 수 있다.

[{"problem_id":"9938","problem_lang":"0","title":"\ubc29 \uccad\uc18c","description":"<p>\uc740\uae30\ub294 \uc220\ubcd1 N\uac1c(1\ubd80\ud130 N\uae4c\uc9c0 \ubc88\ud638\uac00 \ub9e4\uaca8\uc838 \uc788\ub2e4)\uc640 \uc11c\ub78d L\uac1c(1\ubd80\ud130 L\uae4c\uc9c0 \ubc88\ud638\uac00 \ub9e4\uaca8\uc838 \uc788\ub2e4)\ub97c \uac00\uc9c0\uace0 \uc788\ub2e4. \uc220\ubcd1\uc740 \uc740\uae30\uc758 \ubc29 \ubc14\ub2e5\uc5d0 \ud769\uc5b4\uc838 \uc788\uace0, \uc5b4\ub9b0\uc774\ub0a0\uc744 \ub9de\uc774\ud574 \ubc29 \uccad\uc18c\ub97c \ud558\ub824\uace0 \ud55c\ub2e4. &nbsp;\uc11c\ub78d\uc5d0\ub294 \uc220\ubcd1\uc774 \ud558\ub098 \ub4e4\uc5b4\uac08 \uc218 \uc788\ub2e4. \ub098\uc911\uc5d0 \uc6d0\ud558\ub294 \uc220\uc744 \ube60\ub974\uac8c \ucc3e\uc744 \uc218 \uc788\uac8c \ud558\uae30 \uc704\ud574 \uc740\uae30\ub294 \uac01\uac01\uc758 \uc220\ubcd1\uc774 \ub4e4\uc5b4\uac08 \uc218 \uc788\ub294 \uc11c\ub78d\uc758 \ubc88\ud638 A<sub>i<\/sub>\uc640 B<sub>i<\/sub>\ub97c \uacf5\ucc45\uc5d0 \uc801\uc5b4 \ub193\uc558\ub2e4.<\/p>\r\n\r\n<p>\uc740\uae30\ub294 \uc220\ubcd1\uc744 1\ubc88\ubd80\ud130 N\ubc88\uae4c\uc9c0 \uc21c\uc11c\ub300\ub85c \uc815\ub9ac\ud560 \uac83\uc774\uace0, \uac01\uac01\uc758 \uc220\ubcd1\uc5d0 \ub300\ud574\uc11c \ub2e4\uc74c\uacfc \uac19\uc740 \uacfc\uc815\uc744 \uac70\uce5c\ub2e4.<\/p>\r\n\r\n<ol>\r\n\t<li>\uc11c\ub78d A<sub>i<\/sub>\uac00 \ube44\uc5b4\uc788\ub2e4\uba74, i\ubc88 \uc220\uc744 \uadf8 \uc11c\ub78d\uc5d0 \ubcf4\uad00\ud55c\ub2e4.<\/li>\r\n\t<li>\uc11c\ub78d B<sub>i<\/sub>\uac00 \ube44\uc5b4\uc788\ub2e4\uba74, i\ubc88 \uc220\uc744 \uadf8 \uc11c\ub78d\uc5d0 \ubcf4\uad00\ud55c\ub2e4.<\/li>\r\n\t<li>A<sub>i<\/sub>\uc5d0 \ub4e4\uc5b4\uc788\ub294 \uc220\uc744 \ub2e4\ub978 \uc11c\ub78d\uc73c\ub85c \uc774\ub3d9\uc2dc\ud0a8\ub2e4.(\ub2e4\ub978 \uc11c\ub78d\uc740 A<sub>i<\/sub>\uc5d0 \ub4e4\uc5b4\uc788\ub294 \uc220\uc774 \ub4e4\uc5b4\uac08 \uc218 \uc788\ub294 \uc11c\ub78d \uc911 \ud558\ub098\uc774\ub2e4) \ub9cc\uc57d, \uadf8 \uc11c\ub78d\uc5d0\ub3c4 \uc774\ubbf8 \uc220\uc774 \ub4e4\uc5b4\uc788\ub2e4\uba74, \uadf8 \uc220\uc744 \ub2e4\ub978 \uc11c\ub78d\uc73c\ub85c \uc774\ub3d9\uc2dc\ud0a8\ub2e4. \uc774\ub7f0 \uacfc\uc815\uc744 \uac70\uccd0\uc11c \ube48 \uc11c\ub78d\uc744 \ud558\ub098 \ucc3e\uc544 \uc220\uc744 \ubaa8\ub450 \uc774\ub3d9\ud560 \uc218 \uc788\ub294 \uacbd\uc6b0\uc5d0\ub294, \uc220\uc744 \uc774\ub3d9\uc2dc\ud0a4\uace0 i\ubc88 \uc220\uc744 A<sub>i<\/sub>\uc5d0 \ubcf4\uad00\ud55c\ub2e4. \ubd88\uac00\ub2a5\ud55c \uacbd\uc6b0\uc5d0\ub294 \ub2e4\uc74c \uaddc\uce59\uc73c\ub85c \ub118\uc5b4\uac04\ub2e4.<\/li>\r\n\t<li>B<sub>i<\/sub>\uc5d0 \ub4e4\uc5b4\uc788\ub294 \uc220\uc744 \ub2e4\ub978 \uc11c\ub78d\uc73c\ub85c \uc774\ub3d9\uc2dc\ud0a8\ub2e4. \ub9cc\uc57d, \uadf8 \uc11c\ub78d\uc5d0\ub3c4 \uc774\ubbf8 \uc220\uc774 \ub4e4\uc5b4\uc788\ub2e4\uba74, \uadf8 \uc220\uc744 \ub2e4\ub978 \uc11c\ub78d\uc73c\ub85c \uc774\ub3d9\uc2dc\ud0a8\ub2e4. \uc774\ub7f0 \uacfc\uc815\uc744 \uac70\uccd0\uc11c \ube48 \uc11c\ub78d\uc744 \ud558\ub098 \ucc3e\uc544 \uc220\uc744 \ubaa8\ub450 \uc774\ub3d9\ud560 \uc218 \uc788\ub294 \uacbd\uc6b0\uc5d0\ub294, \uc220\uc744 \uc774\ub3d9\uc2dc\ud0a4\uace0 i\ubc88 \uc220\uc744 B<sub>i<\/sub>\uc5d0 \ubcf4\uad00\ud55c\ub2e4. \ubd88\uac00\ub2a5\ud55c \uacbd\uc6b0\uc5d0\ub294 \ub2e4\uc74c \uaddc\uce59\uc73c\ub85c \ub118\uc5b4\uac04\ub2e4.<\/li>\r\n\t<li>\uc704\uc758 \uacfc\uc815\uc774 \ubaa8\ub450 \ubd88\uac00\ub2a5\ud55c \uacbd\uc6b0\uc5d0\ub294 i\ubc88 \uc220\uc744 \uadf8 \uc790\ub9ac\uc5d0\uc11c \ub9c8\uc154\ubc84\ub9b0\ub2e4. (\uc740\uae30\ub294 \uc804\ud600 \ucde8\ud558\uc9c0 \uc54a\ub294\ub2e4)<\/li>\r\n<\/ol>\r\n\r\n<p>\uac01\uac01\uc758 \uc220\uc5d0 \ub300\ud574\uc11c, \uc11c\ub78d\uc5d0 \ubcf4\uad00\ud560 \uc218 \uc788\ub294\uc9c0, \uadf8 \uc790\ub9ac\uc5d0\uc11c \ub9c8\uc154\ubc84\ub9ac\ub294\uc9c0\ub97c \uad6c\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc744 \uc791\uc131\ud558\uc2dc\uc624.<\/p>\r\n","input":"<p>\uccab\uc9f8 \uc904\uc5d0 N\uacfc L\uc774 \uc8fc\uc5b4\uc9c4\ub2e4. (1 &le; N, L &le; 300,000)<\/p>\r\n\r\n<p>\ub2e4\uc74c N\uac1c \uc904\uc5d0\ub294 A<sub>i<\/sub>\uc640 B<sub>i<\/sub>\uac00 \uc8fc\uc5b4\uc9c4\ub2e4. (1 &le; A<sub>i<\/sub>, B<sub>i<\/sub> &le; L, A<sub>i<\/sub> &ne; B<sub>i<\/sub>)<\/p>\r\n","output":"<p>1\ubc88 \uc220\ubd80\ud130 N\ubc88 \uc220\uae4c\uc9c0 \uc21c\uc11c\ub300\ub85c \ubcf4\uad00\ud560 \uc218 \uc788\ub294\uc9c0, \uadf8 \uc790\ub9ac\uc5d0\uc11c \uba39\uc5b4\uc57c \ud558\ub294\uc9c0\ub97c \ucd9c\ub825\ud55c\ub2e4.<\/p>\r\n\r\n<p>\ubcf4\uad00\ud560 \uc218 \uc788\ub294 \uacbd\uc6b0\uc5d0\ub294 &quot;LADICA&quot;\ub97c, \uba39\uc5b4\ubc84\ub824\uc57c \ud558\ub294 \uacbd\uc6b0\uc5d0\ub294 &quot;SMECE&quot;\ub97c \ucd9c\ub825\ud55c\ub2e4.<\/p>\r\n","hint":"<p>\ucc98\uc74c 6\uac1c\uc758 \uc220\uc740 \uaddc\uce59 1\uc5d0 \uc758\ud574\uc11c 1, 3, 5, 7, 9, 2\ubc88 \uc11c\ub78d\uc5d0 \ubcf4\uad00\ud560 \uc218 \uc788\ub2e4.<\/p>\r\n\r\n<p>7\ubc88\uc9f8 \uc220\uc740 \uaddc\uce59 3\uc744 \uc801\uc6a9\ud560 \uc218 \uc788\ub2e4. 1\ubc88 \uc11c\ub78d\uc5d0 \ub4e4\uc5b4\uc788\ub294 \uc220\uc744 2\ub85c, 2\ubc88 \uc11c\ub78d\uc5d0 \ub4e4\uc5b4\uc788\ub294 \uc220\uc744 3\uc73c\ub85c, 3\ubc88 \uc11c\ub78d\uc5d0 \ub4e4\uc5b4\uc788\ub294 \uc220\uc744 4\ubc88\uc73c\ub85c \uc62e\uae38 \uc218 \uc788\ub2e4.<\/p>\r\n\r\n<p>8\ubc88\uc9f8 \uc220\uc740 8\ubc88 \uc11c\ub78d\uc5d0 \ub123\uc744 \uc218 \uc788\ub2e4.<\/p>\r\n\r\n<p>9\ubc88\uc9f8 \uc220\uc740 \uaddc\uce59 3\uc744 \uc801\uc6a9\ud560 \uc218 \uc788\ub2e4. \uc11c\ub78d 7\uc5d0 \ub4e4\uc5b4\uc788\ub294 \uc220\uc744 8\ub85c, 8\uc5d0 \ub4e4\uc5b4\uc788\ub294 \uc220\uc740 2\ub85c, 2\uc5d0 \ub4e4\uc5b4\uc788\ub294 \uc220\uc744 1\ub85c, 1\uc5d0 \ub4e4\uc5b4\uc788\ub294 \uc220\uc744 5\ub85c, 5\uc5d0 \ub4e4\uc5b4\uc788\ub294 \uc220\uc744 6\uc73c\ub85c \uc62e\uae38 \uc218 \uc788\ub2e4.<\/p>\r\n","original":"0","html_title":"0","problem_lang_tcode":"Korean"},{"problem_id":"9938","problem_lang":"1","title":"LADICE","description":"<p>Mirko has N items (labeled with numbers from 1 to N) and L drawers (labeled with numbers from 1 to L). All items are currently scattered throughout his room, so he decided to clean them up. Each drawer can contain one item, and in order to make it easier for Mirko to find them later, he has determined in advance exactly two drawers (A<sub>i<\/sub> and B<sub>i<\/sub>) for each item i.&nbsp;<\/p>\r\n\r\n<p>Mirko stores the items in order from 1 to N using the first rule he can apply:&nbsp;<\/p>\r\n\r\n<ol>\r\n\t<li>If the drawer A<sub>i<\/sub> is empty, he stores the item i in that drawer&nbsp;<\/li>\r\n\t<li>If the drawer B<sub>i<\/sub> is empty, he stores the item i in that drawer&nbsp;<\/li>\r\n\t<li>Try to move the item from A<sub>i<\/sub> to its other drawer; if that one&#39;s filled too, try moving that item to its other drawer, and so on until you either succeed or get back to a previously seen drawer. In case of success, store the item i in the drawer A<sub>i<\/sub>. In case of failure, continue to next rule.&nbsp;<\/li>\r\n\t<li>Try moving the item from B<sub>i<\/sub> to its other drawer; if that one&#39;s filled too, try moving that item to its other drawer, and so on until you either succeed or get back to a previously seen drawer. In case of success, store the item i in the drawer B<sub>i<\/sub>. In case of failure, continue to next rule.&nbsp;<\/li>\r\n\t<li>Give up and throw away the item i.&nbsp;<\/li>\r\n<\/ol>\r\n\r\n<p>For given pairs of drawers for each item, determine which items will be stored and which will be thrown away.&nbsp;<\/p>\r\n","input":"<p>The first line of input consists of two integers, N and L (1 &le; N, L &le; 300 000), the number of items and the number of drawers.&nbsp;<\/p>\r\n\r\n<p>Each of the following N lines contains two integers: A<sub>i<\/sub> and B<sub>i<\/sub> (1 &le; A<sub>i<\/sub> and B<sub>i<\/sub> &le; L), pair of drawers corresponding to the item i. The numbers A<sub>i<\/sub> and B<sub>i<\/sub> will be different.&nbsp;<\/p>\r\n","output":"<p>For each item, respectively, output where it ends up.&nbsp;<\/p>\r\n\r\n<p>In case the item is stored successfully, output &quot;LADICA&quot; (without quotes, Croatian word for drawer).&nbsp;<\/p>\r\n\r\n<p>In case the item is thrown away, output &quot;SMECE&quot; (without quotes, Croatian word for trash).<\/p>\r\n","hint":"<p>The first six items go into drawers 1, 3, 5, 7, 9, 2 (respectively), by rule 1). For the seventh item, applying the rule 3), we try to move the item in drawer 1 to drawer 2, the item in drawer 2 to drawer 3, the item in drawer 3 to drawer 4, which we succeed because the drawer is empty.&nbsp;<\/p>\r\n\r\n<p>The eighth item goes to drawer 8 which was empty from the beginning.&nbsp;<\/p>\r\n\r\n<p>For the ninth item, applying the rule 3), we try to move the item in drawer 7 to drawer 8, the item in drawer 8 to drawer 2, the item in drawer 2 to drawer 1, the item in drawer 1 to drawer 5, the item in drawer 5 to drawer 6, which we succeed because the drawer is empty.&nbsp;<\/p>\r\n","original":"1","html_title":"0","problem_lang_tcode":"English"}]

출처

Contest > Croatian Open Competition in Informatics > COCI 2013/2014 > Contest #5 6번

  • 문제를 번역한 사람: baekjoon
  • 문제의 오타를 찾은 사람: ggj06281