시간 제한 메모리 제한 제출 정답 맞은 사람 정답 비율
2 초 512 MB 5 2 2 100.000%

문제

미국의 소설가 어니스트 빈센트 라이트는 알파벳 'e'를 사용하지 않고 소설 개즈비를 집필했다.

상근이가 가장 좋아하는 소설가는 어니스트이다. 요즘 상근이는 알파벳 처음 10개만 이용해서 소설을 쓰고 있다. (abcdefghij)

어느날, 상근이가 사용하는 키보드의 'e'키가 망가졌다. 가난한 상근이는 새로운 키보드를 살 돈이 없기 때문에, 지금까지 소설에서 나온 'e'를 모두 삭제하려고 한다. 상근이의 절친한 친구 선영이는 Vim을 이용하면 쉽게 삭제할 수 있다고 알려주었다.

상근이가 알고 있는 Vim 명령어는 "x", "h", "f" 총 세 개이다.

  • "x"는 현재 커서가 가리키고 있는 글자를 삭제하는 명령이다. 삭제를 한 이후에 커서의 위치는 바뀌지 않는다. 따라서, 상근이는 커서가 문서의 마지막 글자를 가리키고 있는 경우에는 이 명령을 사용할 수 없다.
  • "h"는 커서를 왼쪽으로 한 칸 이동시키는 명령이다. 문서의 첫 글자를 가리키고 있는 경우에는 커서의 위치는 바뀌지 않는다.
  • "f"를 누른 다음에는 글자 C도 같이 입력해야 한다. 현재 커서 위치보다 뒤에 있으면서 가장 가까운 C로 커서를 이동한다. 커서 뒤에 C가 없는 경우에는 커서의 위치는 그 자리에 그대로 있는다.

예를 들어, 텍스트와 커서 위치(밑 줄)가 다음과 같은 경우를 생각해보자.

jeffiehadabigidea

  • "x"를 누르면 jeffehadabigidea 가 된다.
  • "h"를 누르면 jeffiehadabigidea 가 된다.
  • "fi"를 누르면 jeffiehadabigidea 가 된다.

문서가 주어졌을 때, 문서에 나타나는 모든 'e'를 삭제하기 위해서 총 키를 몇 번 눌러야하는지 구하는 프로그램을 작성하시오. 'e' 이외의 글자는 삭제하면 안된다. 처음에 커서는 문서의 첫 글자를 가리키고 있다. 'e'키는 망가졌기 때문에, "fe" 명령은 사용할 수 없다.

입력

첫째 줄에 문서의 길이 N이 주어진다. 둘째 줄에는 문서의 내용이 주어진다. 문서는 'a'부터 'f'까지 알파벳 소문자로만 이루어져 있으며, 첫 글자와 마지막 글자는 'e'가 아니다. (N ≤ 70,000)

출력

첫째 줄에 문서의 모든 'e'를 삭제하기 위해 키를 총 몇 번 눌러야하는지 출력한다.

예제 입력 1

35
chefeddiefedjeffeachbigagedegghehad

예제 출력 1

36

힌트

fdhxhhxffhxfahxhhhxhhhxfdhxfghxfahhx 를 누르면 36번 키를 눌러서 'e'를 모두 제거할 수 있다.

문제에서 설명한 명령은 실제 Vim 명령이다.

[{"problem_id":"6293","problem_lang":"0","title":"Vim","description":"<p>\ubbf8\uad6d\uc758 \uc18c\uc124\uac00 \uc5b4\ub2c8\uc2a4\ud2b8 \ube48\uc13c\ud2b8 \ub77c\uc774\ud2b8\ub294 \uc54c\ud30c\ubcb3 &#39;e&#39;\ub97c \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uace0 \uc18c\uc124 \uac1c\uc988\ube44\ub97c \uc9d1\ud544\ud588\ub2e4.<\/p>\r\n\r\n<p>\uc0c1\uadfc\uc774\uac00 \uac00\uc7a5 \uc88b\uc544\ud558\ub294 \uc18c\uc124\uac00\ub294 \uc5b4\ub2c8\uc2a4\ud2b8\uc774\ub2e4. \uc694\uc998 \uc0c1\uadfc\uc774\ub294 \uc54c\ud30c\ubcb3 \ucc98\uc74c 10\uac1c\ub9cc \uc774\uc6a9\ud574\uc11c \uc18c\uc124\uc744 \uc4f0\uace0 \uc788\ub2e4. (abcdefghij)<\/p>\r\n\r\n<p>\uc5b4\ub290\ub0a0, \uc0c1\uadfc\uc774\uac00 \uc0ac\uc6a9\ud558\ub294 \ud0a4\ubcf4\ub4dc\uc758 &#39;e&#39;\ud0a4\uac00 \ub9dd\uac00\uc84c\ub2e4. \uac00\ub09c\ud55c \uc0c1\uadfc\uc774\ub294 \uc0c8\ub85c\uc6b4 \ud0a4\ubcf4\ub4dc\ub97c \uc0b4 \ub3c8\uc774 \uc5c6\uae30 \ub54c\ubb38\uc5d0, \uc9c0\uae08\uae4c\uc9c0 \uc18c\uc124\uc5d0\uc11c \ub098\uc628 &#39;e&#39;\ub97c \ubaa8\ub450 \uc0ad\uc81c\ud558\ub824\uace0 \ud55c\ub2e4. \uc0c1\uadfc\uc774\uc758 \uc808\uce5c\ud55c \uce5c\uad6c \uc120\uc601\uc774\ub294 Vim\uc744 \uc774\uc6a9\ud558\uba74 \uc27d\uac8c \uc0ad\uc81c\ud560 \uc218 \uc788\ub2e4\uace0 \uc54c\ub824\uc8fc\uc5c8\ub2e4.<\/p>\r\n\r\n<p>\uc0c1\uadfc\uc774\uac00 \uc54c\uace0 \uc788\ub294 Vim \uba85\ub839\uc5b4\ub294 &quot;x&quot;, &quot;h&quot;, &quot;f&quot; \ucd1d \uc138 \uac1c\uc774\ub2e4.<\/p>\r\n\r\n<ul>\r\n\t<li>&quot;x&quot;\ub294 \ud604\uc7ac \ucee4\uc11c\uac00 \uac00\ub9ac\ud0a4\uace0 \uc788\ub294 \uae00\uc790\ub97c \uc0ad\uc81c\ud558\ub294 \uba85\ub839\uc774\ub2e4. \uc0ad\uc81c\ub97c \ud55c \uc774\ud6c4\uc5d0 \ucee4\uc11c\uc758 \uc704\uce58\ub294 \ubc14\ub00c\uc9c0 \uc54a\ub294\ub2e4. \ub530\ub77c\uc11c, \uc0c1\uadfc\uc774\ub294 \ucee4\uc11c\uac00 \ubb38\uc11c\uc758 \ub9c8\uc9c0\ub9c9 \uae00\uc790\ub97c \uac00\ub9ac\ud0a4\uace0 \uc788\ub294 \uacbd\uc6b0\uc5d0\ub294 \uc774 \uba85\ub839\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc5c6\ub2e4.<\/li>\r\n\t<li>&quot;h&quot;\ub294 \ucee4\uc11c\ub97c \uc67c\ucabd\uc73c\ub85c \ud55c \uce78 \uc774\ub3d9\uc2dc\ud0a4\ub294 \uba85\ub839\uc774\ub2e4. \ubb38\uc11c\uc758 \uccab \uae00\uc790\ub97c \uac00\ub9ac\ud0a4\uace0 \uc788\ub294 \uacbd\uc6b0\uc5d0\ub294 \ucee4\uc11c\uc758 \uc704\uce58\ub294 \ubc14\ub00c\uc9c0&nbsp;\uc54a\ub294\ub2e4.<\/li>\r\n\t<li>&quot;f&quot;\ub97c \ub204\ub978 \ub2e4\uc74c\uc5d0\ub294 \uae00\uc790 C\ub3c4 \uac19\uc774 \uc785\ub825\ud574\uc57c \ud55c\ub2e4. \ud604\uc7ac \ucee4\uc11c \uc704\uce58\ubcf4\ub2e4 \ub4a4\uc5d0 \uc788\uc73c\uba74\uc11c \uac00\uc7a5 \uac00\uae4c\uc6b4 C\ub85c \ucee4\uc11c\ub97c \uc774\ub3d9\ud55c\ub2e4. \ucee4\uc11c \ub4a4\uc5d0 C\uac00 \uc5c6\ub294 \uacbd\uc6b0\uc5d0\ub294 \ucee4\uc11c\uc758 \uc704\uce58\ub294 \uadf8 \uc790\ub9ac\uc5d0 \uadf8\ub300\ub85c \uc788\ub294\ub2e4.<\/li>\r\n<\/ul>\r\n\r\n<p>\uc608\ub97c \ub4e4\uc5b4, \ud14d\uc2a4\ud2b8\uc640 \ucee4\uc11c \uc704\uce58(\ubc11 \uc904)\uac00 \ub2e4\uc74c\uacfc \uac19\uc740 \uacbd\uc6b0\ub97c \uc0dd\uac01\ud574\ubcf4\uc790.<\/p>\r\n\r\n<p>jeff<u>i<\/u>ehadabigidea<\/p>\r\n\r\n<ul>\r\n\t<li>&quot;x&quot;\ub97c \ub204\ub974\uba74 jeff<u>e<\/u>hadabigidea \uac00 \ub41c\ub2e4.<\/li>\r\n\t<li>&quot;h&quot;\ub97c \ub204\ub974\uba74 jef<u>f<\/u>iehadabigidea \uac00 \ub41c\ub2e4.<\/li>\r\n\t<li>&quot;fi&quot;\ub97c \ub204\ub974\uba74 jeffiehadab<u>i<\/u>gidea \uac00 \ub41c\ub2e4.<\/li>\r\n<\/ul>\r\n\r\n<p>\ubb38\uc11c\uac00 \uc8fc\uc5b4\uc84c\uc744 \ub54c, \ubb38\uc11c\uc5d0 \ub098\ud0c0\ub098\ub294 \ubaa8\ub4e0 &#39;e&#39;\ub97c \uc0ad\uc81c\ud558\uae30 \uc704\ud574\uc11c \ucd1d \ud0a4\ub97c \uba87 \ubc88 \ub20c\ub7ec\uc57c\ud558\ub294\uc9c0 \uad6c\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc744 \uc791\uc131\ud558\uc2dc\uc624. &#39;e&#39; \uc774\uc678\uc758 \uae00\uc790\ub294 \uc0ad\uc81c\ud558\uba74 \uc548\ub41c\ub2e4. \ucc98\uc74c\uc5d0 \ucee4\uc11c\ub294 \ubb38\uc11c\uc758 \uccab \uae00\uc790\ub97c \uac00\ub9ac\ud0a4\uace0 \uc788\ub2e4. &#39;e&#39;\ud0a4\ub294 \ub9dd\uac00\uc84c\uae30 \ub54c\ubb38\uc5d0, &quot;fe&quot; \uba85\ub839\uc740 \uc0ac\uc6a9\ud560 \uc218 \uc5c6\ub2e4.<\/p>\r\n","input":"<p>\uccab\uc9f8 \uc904\uc5d0 \ubb38\uc11c\uc758 \uae38\uc774 N\uc774 \uc8fc\uc5b4\uc9c4\ub2e4. \ub458\uc9f8 \uc904\uc5d0\ub294 \ubb38\uc11c\uc758 \ub0b4\uc6a9\uc774 \uc8fc\uc5b4\uc9c4\ub2e4. \ubb38\uc11c\ub294 &#39;a&#39;\ubd80\ud130 &#39;f&#39;\uae4c\uc9c0 \uc54c\ud30c\ubcb3 \uc18c\ubb38\uc790\ub85c\ub9cc \uc774\ub8e8\uc5b4\uc838 \uc788\uc73c\uba70, \uccab \uae00\uc790\uc640 \ub9c8\uc9c0\ub9c9 \uae00\uc790\ub294 &#39;e&#39;\uac00 \uc544\ub2c8\ub2e4. (N &le; 70,000)<\/p>\r\n","output":"<p>\uccab\uc9f8 \uc904\uc5d0 \ubb38\uc11c\uc758 \ubaa8\ub4e0 &#39;e&#39;\ub97c \uc0ad\uc81c\ud558\uae30 \uc704\ud574 \ud0a4\ub97c \ucd1d \uba87 \ubc88 \ub20c\ub7ec\uc57c\ud558\ub294\uc9c0 \ucd9c\ub825\ud55c\ub2e4.<\/p>\r\n","hint":"<p>fdhxhhxffhxfahxhhhxhhhxfdhxfghxfahhx \ub97c \ub204\ub974\uba74 36\ubc88 \ud0a4\ub97c \ub20c\ub7ec\uc11c &#39;e&#39;\ub97c \ubaa8\ub450 \uc81c\uac70\ud560 \uc218 \uc788\ub2e4.<\/p>\r\n\r\n<p>\ubb38\uc81c\uc5d0\uc11c \uc124\uba85\ud55c \uba85\ub839\uc740 \uc2e4\uc81c Vim \uba85\ub839\uc774\ub2e4.<\/p>\r\n","original":"0","problem_lang_code":"\ud55c\uad6d\uc5b4"},{"problem_id":"6293","problem_lang":"1","title":"Vim","description":"<p>Ernest Vincent Wright was an American author, known for writing a novel (Gadsby) without using the letter &ldquo;e&rdquo;. Victor is a big fan of Ernest and tries to imitate him in writing a novel, but is looking for a real challenge. He uses only the \ufb01rst ten characters of the alphabet (namely abcdefghij). Ironically, the &ldquo;e&rdquo; key on his computer breaks halfway through the novel, and for consistency, he decides to delete all the &ldquo;e&rdquo;s he has already written. His friend, a programmer, recommended him to use the text editor Vim to perform this task. Unfortunately, Victor is not very familiar with Vim, and knows only three different commands: &ldquo;x&rdquo;, &ldquo;h&rdquo; and &ldquo;f&rdquo;.<\/p>\r\n\r\n<ul>\r\n\t<li>&ldquo;x&rdquo; deletes the character at the cursor. The cursor position (counted from the left) does not change. Victor shall not use this command if the cursor is at the last character of the document.<\/li>\r\n\t<li>&ldquo;h&rdquo; moves the cursor one step backward (to the left). Nothing happens if the cursor is at the beginning of the document.<\/li>\r\n\t<li>&ldquo;f&rdquo; waits for the user to input another character C, and then moves the cursor forward to the next occurrence of C (even if the character at the cursor happens to be C). Nothing happens if C does not occur anywhere to the right of the cursor position.<\/li>\r\n<\/ul>\r\n\r\n<p>For example, if the current text is<\/p>\r\n\r\n<p>jeff<u>i<\/u>ehadabigidea<\/p>\r\n\r\n<p>where the cursor is denoted by a underline, then<\/p>\r\n\r\n<ul>\r\n\t<li>&ldquo;x&rdquo; would give jeff<u>e<\/u>hadabigidea<\/li>\r\n\t<li>&ldquo;h&rdquo; would give jef<u>f<\/u>iehadabigidea<\/li>\r\n\t<li>&ldquo;fi&rdquo; would give jeffiehadab<u>i<\/u>gidea<\/li>\r\n<\/ul>\r\n\r\n<p>Write a program that calculates the least number of key presses that Victor needs to use to delete all the &ldquo;e&rdquo;s in the document, but no other letters. Initially, the cursor is at the \ufb01rst character of the document. Note that the &ldquo;e&rdquo; key is broken, so the command &ldquo;fe&rdquo; cannot be used.<\/p>\r\n\r\n<p>&nbsp;<\/p>\r\n","input":"<p>The \ufb01rst line contains the integer N, the length of the document. The next line contains N characters, each one of the ten lowercase letters from &ldquo;a&rdquo; to &ldquo;j&rdquo;. The \ufb01rst and the last letter of the input are both different from &ldquo;e&rdquo;. (N &le; 70 000)<\/p>\r\n","output":"<p>The only line of output should contain exactly one integer: the least number of key presses Victor needs to delete all the &ldquo;e&rdquo;s.<\/p>\r\n","hint":"<p>An optimal solution for the example test case is:<\/p>\r\n\r\n<p>fdhxhhxffhxfahxhhhxhhhxfdhxfghxfahhx<\/p>\r\n\r\n<p>You can test this by starting the Vim editor yourself (type &ldquo;vim file.txt&rdquo; at the command prompt to open file.txt, type &ldquo;:q&lt;ENTER&gt;&rdquo; to quit).<\/p>\r\n","original":"1","problem_lang_code":"\uc601\uc5b4"}]

출처

Olympiad > Baltic Olympiad in Informatics > BOI 2013 F번

  • 문제를 번역한 사람: baekjoon
  • 데이터를 추가한 사람: koosaga
  • 문제의 오타를 찾은 사람: metadata