시간 제한 메모리 제한 제출 정답 맞은 사람 정답 비율
1 초 128 MB 201 57 26 23.423%

문제

알파벳 소문자로 이루어진 단어 T와 패턴 P가 있다. 이때, T에 문자를 적절히 삭제해서 P가 되는지 확인해보려고 한다.

예를 들어, 단어 programming에서 적절히 문자를 삭제한다면, pong, program, roaming을 얻을 수 있다. 하지만, 순서는 유지되어야 하므로 map은 만들 수 없다.

T는 문자 방정식로 인코딩 되어있다. 이 방정식은 알파벳 대문자로 되어있는 변수를 사용한다.

모든 방정식은 다음과 같은 형태를 갖는다.

  • A = 알파벳 소문자로 이루어져 있는 단어 또는
  • A = B + C (B와 C는 모두 변수, +는 문자열 연결을 의미한다.)

또한, 어떤 변수가 왼쪽에 있는 경우는 단 한번만 나오며, A에 대한 방정식을 풀 때, 우변에 다시 A가 나오는 경우가 없다.

따라서, 이 방정식은 항상 유일한 해를 가진다. 예를 들어, 다음과 같은 방정식을 살펴보자.

  • START = FIRST + SECND
  • FIRST = D + E
  • SECND = F + E
  • D = good
  • E = times
  • F = bad

위의 방정식을 풀면, START = goodtimesbadtimes 가 된다.

패턴 P와 문자 방정식, 그리고 어떤 변수가 T인지 주어졌을 때, T에서 문자를 적절히 삭제하면 P가 되는지 알아보는 프로그램을 작성하시오.

입력

첫째 줄에 테스트 케이스의 개수가 주어진다. 각 테스트 케이스는 다음과 같이 구성되어 있다.

첫째 줄에 정수 K (1 <= K <= 500) 가 주어진다. 이 값은 방정식의 개수이다. 다음 K개의 줄에는 방정식이 주어진다. 방정식은 위에서 설명한 2가지 형태 중 하나이고, 공백으로 구분되어져 있는 단어, +, =로만 이루어져 있다. 모든 단어와 변수의 이름은 최대 5글자이다. 다음 줄에는 어떤 변수가 T인지 주어진다. 그리고 마지막 줄에는 패턴 P가 주어진다. 

P의 길이는 최대 2,000이다.

출력

각 테스트 케이스에 대해서, T의 문자를 적절히 삭제해서 P를 만들 수 있으면 YES를, 아니면 NO를 출력한다.

예제 입력 1

1
6
START = FIRST + SECND
FIRST = D + E
SECND = F + E
D = good
E = times
F = bad
START
debate

예제 출력 1

YES
[{"problem_id":"3409","problem_lang":"0","title":"\ubb38\uc790 \ubc29\uc815\uc2dd","description":"<p>\uc54c\ud30c\ubcb3 \uc18c\ubb38\uc790\ub85c \uc774\ub8e8\uc5b4\uc9c4 \ub2e8\uc5b4 T\uc640 \ud328\ud134 P\uac00 \uc788\ub2e4. \uc774\ub54c, T\uc5d0 \ubb38\uc790\ub97c \uc801\uc808\ud788 \uc0ad\uc81c\ud574\uc11c P\uac00 \ub418\ub294\uc9c0 \ud655\uc778\ud574\ubcf4\ub824\uace0 \ud55c\ub2e4.<\/p>\r\n\r\n<p>\uc608\ub97c \ub4e4\uc5b4, \ub2e8\uc5b4 programming\uc5d0\uc11c \uc801\uc808\ud788 \ubb38\uc790\ub97c \uc0ad\uc81c\ud55c\ub2e4\uba74, pong, program, roaming\uc744 \uc5bb\uc744 \uc218 \uc788\ub2e4. \ud558\uc9c0\ub9cc, \uc21c\uc11c\ub294 \uc720\uc9c0\ub418\uc5b4\uc57c \ud558\ubbc0\ub85c map\uc740 \ub9cc\ub4e4 \uc218 \uc5c6\ub2e4.<\/p>\r\n\r\n<p>T\ub294 \ubb38\uc790 \ubc29\uc815\uc2dd\ub85c \uc778\ucf54\ub529 \ub418\uc5b4\uc788\ub2e4. \uc774 \ubc29\uc815\uc2dd\uc740 \uc54c\ud30c\ubcb3 \ub300\ubb38\uc790\ub85c \ub418\uc5b4\uc788\ub294 \ubcc0\uc218\ub97c \uc0ac\uc6a9\ud55c\ub2e4.<\/p>\r\n\r\n<p>\ubaa8\ub4e0 \ubc29\uc815\uc2dd\uc740 \ub2e4\uc74c\uacfc \uac19\uc740 \ud615\ud0dc\ub97c \uac16\ub294\ub2e4.<\/p>\r\n\r\n<ul>\r\n\t<li>A = \uc54c\ud30c\ubcb3 \uc18c\ubb38\uc790\ub85c \uc774\ub8e8\uc5b4\uc838 \uc788\ub294 \ub2e8\uc5b4&nbsp;\ub610\ub294<\/li>\r\n\t<li>A = B + C (B\uc640 C\ub294 \ubaa8\ub450 \ubcc0\uc218, +\ub294 \ubb38\uc790\uc5f4 \uc5f0\uacb0\uc744 \uc758\ubbf8\ud55c\ub2e4.)<\/li>\r\n<\/ul>\r\n\r\n<p>\ub610\ud55c, \uc5b4\ub5a4 \ubcc0\uc218\uac00 \uc67c\ucabd\uc5d0 \uc788\ub294 \uacbd\uc6b0\ub294 \ub2e8 \ud55c\ubc88\ub9cc \ub098\uc624\uba70, A\uc5d0 \ub300\ud55c \ubc29\uc815\uc2dd\uc744 \ud480 \ub54c, \uc6b0\ubcc0\uc5d0 \ub2e4\uc2dc A\uac00 \ub098\uc624\ub294 \uacbd\uc6b0\uac00 \uc5c6\ub2e4.<\/p>\r\n\r\n<p>\ub530\ub77c\uc11c, \uc774 \ubc29\uc815\uc2dd\uc740 \ud56d\uc0c1 \uc720\uc77c\ud55c \ud574\ub97c \uac00\uc9c4\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ub2e4\uc74c\uacfc \uac19\uc740 \ubc29\uc815\uc2dd\uc744 \uc0b4\ud3b4\ubcf4\uc790.<\/p>\r\n\r\n<ul>\r\n\t<li>START = FIRST + SECND<\/li>\r\n\t<li>FIRST = D + E<\/li>\r\n\t<li>SECND = F + E<\/li>\r\n\t<li>D = good<\/li>\r\n\t<li>E = times<\/li>\r\n\t<li>F = bad<\/li>\r\n<\/ul>\r\n\r\n<p>\uc704\uc758 \ubc29\uc815\uc2dd\uc744 \ud480\uba74, START = goodtimesbadtimes \uac00 \ub41c\ub2e4.<\/p>\r\n\r\n<p>\ud328\ud134 P\uc640 \ubb38\uc790 \ubc29\uc815\uc2dd, \uadf8\ub9ac\uace0 \uc5b4\ub5a4 \ubcc0\uc218\uac00 T\uc778\uc9c0 \uc8fc\uc5b4\uc84c\uc744 \ub54c, T\uc5d0\uc11c \ubb38\uc790\ub97c \uc801\uc808\ud788 \uc0ad\uc81c\ud558\uba74 P\uac00 \ub418\ub294\uc9c0 \uc54c\uc544\ubcf4\ub294 \ud504\ub85c\uadf8\ub7a8\uc744 \uc791\uc131\ud558\uc2dc\uc624.<\/p>\r\n","input":"<p>\uccab\uc9f8 \uc904\uc5d0 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uac1c\uc218\uac00 \uc8fc\uc5b4\uc9c4\ub2e4. \uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uad6c\uc131\ub418\uc5b4 \uc788\ub2e4.<\/p>\r\n\r\n<p>\uccab\uc9f8 \uc904\uc5d0 \uc815\uc218 K (1 &lt;= K &lt;= 500) \uac00 \uc8fc\uc5b4\uc9c4\ub2e4. \uc774 \uac12\uc740 \ubc29\uc815\uc2dd\uc758 \uac1c\uc218\uc774\ub2e4. \ub2e4\uc74c K\uac1c\uc758 \uc904\uc5d0\ub294 \ubc29\uc815\uc2dd\uc774 \uc8fc\uc5b4\uc9c4\ub2e4. \ubc29\uc815\uc2dd\uc740 \uc704\uc5d0\uc11c \uc124\uba85\ud55c 2\uac00\uc9c0 \ud615\ud0dc \uc911 \ud558\ub098\uc774\uace0, \uacf5\ubc31\uc73c\ub85c \uad6c\ubd84\ub418\uc5b4\uc838 \uc788\ub294 \ub2e8\uc5b4, +, =\ub85c\ub9cc \uc774\ub8e8\uc5b4\uc838 \uc788\ub2e4. \ubaa8\ub4e0 \ub2e8\uc5b4\uc640 \ubcc0\uc218\uc758 \uc774\ub984\uc740 \ucd5c\ub300 5\uae00\uc790\uc774\ub2e4. \ub2e4\uc74c \uc904\uc5d0\ub294 \uc5b4\ub5a4 \ubcc0\uc218\uac00 T\uc778\uc9c0 \uc8fc\uc5b4\uc9c4\ub2e4. \uadf8\ub9ac\uace0 \ub9c8\uc9c0\ub9c9 \uc904\uc5d0\ub294 \ud328\ud134 P\uac00 \uc8fc\uc5b4\uc9c4\ub2e4.&nbsp;<\/p>\r\n\r\n<p>P\uc758 \uae38\uc774\ub294 \ucd5c\ub300 2,000\uc774\ub2e4.<\/p>\r\n","output":"<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc5d0 \ub300\ud574\uc11c, T\uc758 \ubb38\uc790\ub97c \uc801\uc808\ud788 \uc0ad\uc81c\ud574\uc11c P\ub97c \ub9cc\ub4e4 \uc218 \uc788\uc73c\uba74 YES\ub97c, \uc544\ub2c8\uba74 NO\ub97c \ucd9c\ub825\ud55c\ub2e4.<\/p>\r\n","hint":"","original":"0","problem_lang_code":"\ud55c\uad6d\uc5b4"},{"problem_id":"3409","problem_lang":"1","title":"Word equations","description":"<p>You are given a text T and a pattern P. You want to check if you can erase some of the letters of T so that the remaining symbols produce exactly P. For example, the word programming can be partially erased to obtain pong or program or roaming (but not map, as the letters must remain in the same order). Both words consist of small letters of the English alphabet only<\/p>\r\n\r\n<p>There is just one catch: the text T is encoded by a system of equations. The equations use special symbols (every symbol is denoted by a word in capital letters), each of them encoding some word over the alphabet {a, ..., z}. Each equation is of one of the following forms:<\/p>\r\n\r\n<p>A = a word over {a, ..., z}<br \/>\r\nor<br \/>\r\nA = B + C<\/p>\r\n\r\n<p>where A, B, C can be any special symbols, and the + sign denotes the concatenation of words. The system is:<\/p>\r\n\r\n<ul>\r\n\t<li>unambiguous &ndash; for a \ufb01xed symbol A, there is exactly one equation with A on the left-hand side, and<\/li>\r\n\t<li>acyclic &ndash; if you start from any symbol A and make substitutions according to the equations (right-hand side for left-hand side), you can never obtain an expression containing A again.<\/li>\r\n<\/ul>\r\n\r\n<p>Such a system always has a unique solution. For example, in the system:<\/p>\r\n\r\n<ul>\r\n\t<li>START = FIRST + SECND<\/li>\r\n\t<li>FIRST = D + E<\/li>\r\n\t<li>SECND = F + E<\/li>\r\n\t<li>D = good<\/li>\r\n\t<li>E = times<\/li>\r\n\t<li>F = bad<\/li>\r\n<\/ul>\r\n\r\n<p>the symbol START encodes the word goodtimesbadtimes<\/p>\r\n\r\n<p>Given a single word P as the pattern, a system of equations, and one particular starting symbol S of this system, determine whether the pattern P is present in the word encoded by S.<\/p>\r\n","input":"<p>The \ufb01rst line of the input contains the number of test cases T. The descriptions of the test cases follow:<\/p>\r\n\r\n<p>Each test case starts with a line containing a single integer k (1 &le; k &le; 500)&mdash;the number of equations. The next k lines contain equations. Each of them has one of the two forms given in the problem statement, with spaces separating words, plus signs, and equation signs. Each word (including symbol names) is at least one and at most \ufb01ve characters long.<\/p>\r\n\r\n<p>The next line contains a single special symbol (a word in capital letters), while the \ufb01nal line contains a non-empty word of at most 2 000 lowercase letters. These are the starting symbol and the pattern to \ufb01nd, respectively.<\/p>\r\n","output":"<p>Print the answers to the test cases in the order in which they appear in the input. For each test case print the answer in a separate line: YES if the pattern appears in the given encoded word, and NO otherwise.<\/p>\r\n","hint":"","original":"1","problem_lang_code":"\uc601\uc5b4"}]

출처

ACM-ICPC > Regionals > Europe > Central European Regional Contest > CERC 2012 E번

  • 문제를 번역한 사람: baekjoon
  • 데이터를 추가한 사람: doju
  • 잘못된 번역을 찾은 사람: xesmaster