KTUGFaq

KTUG FAQ

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You are dishonest, but never to the point of hurting a friend.
FrontPage › ÀÛÀº³ª¹«/2008-03
Mar 30, 2008
Love at First Byte
Submitted by ÀÛÀº³ª¹« @ 03-30 [10:01 pm]
http://www.stanfordalumni.org/news/magazine/2006/mayjun/features/knuth.html ¸¦ Ç÷¹ÀÎÅØÀ¸·Î ¿Å°Üº¸¾Ò½À´Ï´Ù.

pdf: @LoveAtFirstByte.pdf (690.17 KB) src: @LoveAtFirstByte.tar.gz (227.17 KB)

Mar 27, 2008
µÎ °³ÀÇ ¸·´ë±â
Submitted by ÀÛÀº³ª¹« @ 03-27 [09:47 pm]
ȸ»ç µ¿·á°¡ ³½ ¼ö¼ö²²³¢.
µÎ °³ÀÇ ¸·´ë±â°¡ ÀÖ´Ù. °¢ ¸·´ë±âÀÇ ÇÑÂÊ ³¡¿¡ ºÒÀ» ºÙ¿©¼­
¸·´ë±â°¡ ¸ðµÎ ºÒ¿¡ Ÿ´Âµ¥ °É¸®´Â ½Ã°£Àº °¢°¢ 1½Ã°£À¸·Î °°´Ù.

±×·±µ¥ °¢°¢ÀÇ ¸·´ë±â´Â ÀçÁúÀÌ ±ÕÀÏÇÏÁö ¾Ê¾Æ¼­ Ÿµé¾î°¡´Â ¼Óµµ°¡
´Ã °°Áö ¾Ê´Ù. ¾î¶² ºÎºÐÀº »¡¸® Ÿµé¾î°¡°í ¾î¶² ºÎºÐÀº ¾ÆÁÖ ´À¸®°Ô Ÿ°í,
¾î·µç Çϳª°¡ ¿ÏÀüÈ÷ Ÿ´Âµ¥´Â 1½Ã°£ÀÌ °É¸°´Ù.

ÀÌ·¯ÇÑ ¼ºÁúÀ» °¡Áø µÎ °³ÀÇ ¸·´ë±â·Î 45ºÐÀ» Àê ¼ö ÀÖÀ»±î?

¸¸»ç°¡ ±×·¸Áö¸¸, ¾Ë°í º¸¸é ¸Å¿ì ½±´Ù. ±×·±µ¥ À̳빫 TeXÀº ºÁµµ ºÁµµ ¸ð¸£°ÚÀ¸´Ï...

´ëÃæ Á¤´äÀ» ÁüÀÛÇØ º¸¸é¡¦

ÇÑ ¸·´ë±â¿¡´Â ÇÑÂÊ ³¡¿¡¸¸ ºÒÀ» ºÙÀÌ°í, ´Ù¸¥ ¸·´ë±â¿¡´Â ¾çÂÊ ³¡¿¡ ºÒÀ» ºÙÀδÙ.
¾çÂÊ¿¡ ºÒºÙÀÎ ¸·´ë±â°¡ ´Ù Ÿ¸é ÇÑÂÊ ¸·´ë±âÀÇ ³ª¸ÓÁö ³¡¿¡µµ ºÒÀ» ºÙÀδÙ.
µÎ ¸·´ë±â°¡ ´Ù Ÿ¸é 45ºÐ °æ°ú.
ÀÌ°Ô Á¤´ä ¸Â³ª¿ä? -- Kunggom 2008-03-30 16:29:35

¸Â´Â°Å °°³×¿ä. -- ÀÛÀº³ª¹« 2008-03-30 22:24:46

ÀÀ¿ë¹®Á¦: ÀçÁúÀÌ ÀÏÁ¤ÇÏÁö ¾ÊÀº ÇÑ ¸·´ë±âÀÇ ÇÑÂÊ ³¡¿¡ ºÒÀ» ºÙ¿© ´Ù Ÿ´Â µ¥ 50ºÐ °É¸°´Ù°í ÇÑ´Ù. ±×·¯ÇÑ ¶Ç ÇϳªÀÇ ¸·´ë±â´Â ´Ù Ÿ´Â µ¥ 10ºÐ °É¸°´Ù°í ÇÑ´Ù. ÀÌ µÎ ¸·´ë±â·Î Àê ¼ö ÀÖ´Â ½Ã°£Àº? --ischo

Á˼ÛÇѵ¥¿ä. Àú´Â ÀÌÇØ°¡ Àß µÇÁö ¾Ê¾Æ¿ä. ÇÑÂÊ ³¡¿¡ ºÒÀ» ºÙ¿© ´Ù Ÿ´Â µ¥ 1½Ã°£ÀÌ °É¸°´Ù°í Çؼ­ ¾çÂʳ¡À» µ¿½Ã¿¡ ºÙÀÌ¸é ±×°Ô ´Ù Ÿ´Âµ¥ 30ºÐÀ̶ó´Â °É ¾îÄÉ ¾Ë ¼ö ÀÖ³ª¿ä?

A¦§¦¡¦¡¦¡¦¡¦¡¦¡¦¡¦¡¦¡¦¡¦¡¦¡¦¡¦¡¦©B

°¡·É AÂÊ¿¡ ºÒÀ» ºÙÀ̸é 30ºÐ±îÁö´Â 1/10 ¸¸Å­ Ÿ´Ù°¡ ³ª¸ÓÁö 30ºÐ°£ 9/10°¡ Å» ¼ö ÀÖ°í¿ä, BÂÊ¿¡ ºÒÀ» ºÙÀ̸é 59ºÐ 59Ãʵ¿¾ÈÀº 1/10 ¸¸Å­ Ÿ´Ù°¡ ³ª¸ÓÁö 1ÃÊ°£ 9/10 Å» ¼öµµ ÀÖÀÝ°Ú¾î¿ä? ±×·¯¸é ¾çÂÊ¿¡¼­ ºÒÀ» ºÙ¿©µµ ´Ù Ÿ¹ö¸®Áö ¾ÊÀݾƿä? -- Progress 2008-04-01 08:39:14

ÀÏ´Ü ÀüÁ¦°¡ ÇϳªÀÇ ¸·´ë±â°¡ Àü¼ÒÇϴµ¥ 1½Ã°£ÀÌ °É¸®¹Ç·Î, À§¿¡¼­ ¿¹·Îµç °æ¿ìÀÇ ¸·´ë±â´Â ¸ðµÎ Ÿ´Âµ¥´Â 1½Ã°£ÀÌ °É¸®Áö ¾ÊÀ» °Í °°½À´Ï´Ù.

Àúµµ ¼ö¼ö²²³¢¸¸ µè°í ´äÀº µèÁö ¸øÇؼ­ Á¤È®ÇÑ ´äÀº ¸ð¸£Áö¸¸, Kunggom´Ô°ú °°Àº »ý°¢À» ÇÏ°í ÀÖ¾ú½À´Ï´Ù.

Á¦ »ý°¢¿¡, ¹®Á¦¿¡¼­ ÁÖ¾îÁø ³ª¹«ÀÇ ÀçÁúÀÌ ±ÕÀÏÇÏÁö ¾Ê´Ù°í ÇÏ´Â °ÍÀº, ³ª¹«ÀÇ ÀçÁúÀÌ ±ÕÀÏÇÏ´Ù¸é ³ª¹«°¡ Ÿµé¾î°¡´Â ±æÀÌ·Î ½Ã°£À» ¾Ë ¼ö ÀÖÀ¸´Ï±î, ±×·¯ÇÑ °ÍÀ» ¹æÁöÇϵµ·Ï ÇÑ °Í °°½À´Ï´Ù.

µû¶ó¼­ ³ª¹«ÀÇ ÀçÁúÀÌ ±ÕÀÏÇÏ´Ù°í ÇÏ°í ¹®Á¦¸¦ »ý°¢Çصµ µÉ °Í °°½À´Ï´Ù.

´Ü, Ÿµé¾î°£ ±æÀÌ·Î ½Ã°£À» Àç±â ¾ø±â! -- ÀÛÀº³ª¹« 2008-04-01 09:08:46

°¡Á¤: ±ÕÁúÀÇ ¸·´ë±â´Â ¾î´À ÂÊ¿¡¼­ Ÿµé¾î ¿Àµç ´ÜÀ§½Ã°£´ç Ÿ´Â ±æÀÌ°¡ °°´Ù.

A||----------------|B

¾î¶² ¸·´ë±âÀÇ AÂÊ °¡±î¿î 1/10¸¸Å­Àº Ÿ´Â µ¥ 30ºÐ °É¸®´Â ÀçÁúÀÌ°í ³ª¸ÓÁö 9/10´Â Ÿ´Â µ¥ 30ºÐ °É¸®´Â ÀçÁúÀ̶ó°í ÇÏÀÚ. °¡Á¤¿¡ ÀÇÇØ, ¾î´À ÂÊ¿¡¼­ ºÒÀ» ºÙÀ̵ç 30ºÐ µ¿¾ÈÀº ÇÑ ÀçÁúÀÌ Å¸°í ³ª¸ÓÁö 30ºÐ µ¿¾È ³²Àº ºÎºÐÀÌ Åº´Ù. ÀÌ´Â ¾çÂÊ¿¡¼­ µ¿½Ã¿¡ ºÒÀ» ºÙÀÌ¸é ´Ù Å¸´Â µ¥ 30ºÐ °É¸°´Ù´Â °ÍÀ» ÀǹÌÇÑ´Ù.

¿©·¯ ÀçÁúÀÌ ¼¯¿© ÀÖ´Â Çѽð£Â¥¸® ¸·´ë±â¶ó¸é, Ÿµé¾î ¿À´Â ¹æÇâ¿¡ °ü°è¾øÀÌ °°Àº ÀçÁúÀ» Å¿ì´Â ½Ã°£ÀÌ µ¿ÀÏÇÏ´Ù´Â °¡Á¤ÇÏ¿¡¼­´Â, ÇÑÂÊ¿¡¼­ 30ºÐ¸¸Å­ Ÿ°í ´Ù¸¥ÂÊ¿¡¼­ 30ºÐ¸¸Å­ Ÿ¸é ´Ù ź´Ù. -- IsCho 2008-04-01 09:09:04

ÀÀ¿ë¹®Á¦ ´äÀÇ ÀϺδÂ...50ºÐ¿¡ Ÿ´Â ¸·´ë¸¦ ±ä°Å, 10ºÐ¿¡ Ÿ´Â°Å¸¦ ÀÚ¸¥°Å¶ó ÇÏ¿© ÀÚ¸¥°Å¸¸À¸·Î Àê ¼ö ÀÖ´Â ½Ã°£: 5ºÐ, 10ºÐ ±ä°Å¸¸À¸·Î´Â 25ºÐ, 50ºÐ ÀÚ¸¥°Å-±ä°Å¸¦ Á÷·Ä·Î Å¿ö¼­ 30ºÐ, 35ºÐ, 55ºÐ, 60ºÐ ÀÚ¸¥°Å-±ä°Å¸¦ º´·Ä·Î Å¿ì¸é, 15ºÐ, 20ºÐ, 40ºÐ, 45ºÐ °á±¹ 5ºÐ °£°ÝÀ¸·Î 1½Ã°£À» Àç´Â ½Ã°è°¡ µÇ³ª¿ä~~~ -- ÇǶó¹Ì 2008-04-01 09:55:59

Æò¾ÈÇϼÌÁö¿ä? ±ò²ûÇÏ°Ô Á¤¸®Çϼ̱º¿ä... "5ºÐ ´ÜÀ§·Î 1½Ã°£±îÁö Àê ¼ö ÀÖ´Ù." Á¦°¡ 22ºÐ 30ÃʱîÁö »ý°¢ÇÏ´Â µ¿¾È ¹ú½á ÇÑ ½Ã°£±îÁö Á¤¸®Çϼ̳׿ä. :-) -- IsCho 2008-04-01 10:17:06

ÇбⰡ ¹ú½á 3ºÐÀÇ 1ÀÌ Áö³³´Ï´Ù. Àß Áö³»½Ã´ÂÁö¿ä...À§ÀÇ Kunggom´Ô ¹æ½Ä´ë·Î¶ó¸é ´äÀÌ ´õ ³ª¿Ã°Å °°Àºµ¥ ..¾ÆÀ̱¸ ¸Ó¸®¾ÆÆÄ.. -- ÇǶó¹Ì 2008-04-01 10:22:13

¿¡±¸... ±Ùµ¥¿ä. Àú´Â ½ÉÁ¤ÀûÀ¸·Î´Â µ¿°¨Çϴµ¥...

¾î¶»°Ô Ÿµé¾î°¡µç(È­»ìÇ¥ÀÇ ¹æÇâÀÌ ºÒÀ» ºÙ¾î°¡´Â ¹æÇâÀ̶óÇϸé)

A¡æB: 1½Ã°£, B¡æA: 1½Ã°£ °É¸®Àݾƿä?

±×·±µ¥ ¿Ö A¡êB °¡ 30ºÐÀ̳Ĵ °ÍÀÌÁö¿ä. "¾Ë ¼ö ¾ø´Ù"°¡ ´ä ¾Æ´Ò±î Çؼ­¿ä. ÀçÁúÀÌ °°À¸¸é¾ß trivialÇÑ ¹®Á¦Àε¥, ÀçÁúÀÌ °°Áö ¾ÊÀ¸¸é ¹®Á¦°¡ ÀÖÁö ¾Ê³ª¿ä? Áï A1°ú B1À» °¢°¢ A1¡ô{A, B}ÀÌ°í B1¡ô{A, B}ÀÌ°í, A1Àº A¿¡ °¡±õ°í B1Àº B¿¡ °¡±î¿î ÁÂÇ¥¶ó°í ÇսôÙ. À̶§ ´ÜÀ§±¸°£ A1°ú B1¿¡¼­ t|A1¡æB1|¿¡ °É¸®´Â ½Ã°£°ú t|A1¡çB1|¿¡ °É¸®´Â ½Ã°£ÀÌ ´Ù¸¦ ¼ö ÀÖÁö ¾Ê³ª¿ä? À̸¦ Å׸é, A1¿¡¼­ B1ÂÊÀ¸·Î °¥ ¶§ ´õ¿í ¸Í·ÄÇÏ°Ô Å¸´Â È­ÇйÝÀÀ(?)ÀÌ ÀϾ´Â µ¥ ºñÇØ, B1¿¡¼­ A1ÂÊ¿¡¼­ °¥ ¶§´Â ´À¸®°Ô Ÿ´Â È­ÇйÝÀÀ(?)ÀÌ ÀÖÀ» ¼ö ÀÖÁö ¾Ê³ª¿ä? (Çö½Ç¿¡¼­´Â ºÒ°¡ÇÑ ¹®Á¨°¡¿ä?) @.@ -- Progress 2008-04-01 13:20:58

ÀÌ·± ³í¸® ¹®Á¦´Â º¸Åë °ü³äÀûÀÎ ¼¼°è¸¦ »óÁ¤ÇÏ°í Ǫ´Â °ÍÀ̱⠶§¹®¿¡ Çö½ÇÀûÀÎ ¹®Á¦´Â °í·ÁÇÒ ÇÊ¿ä°¡ ¾øÀ» °Í °°½À´Ï´Ù. ÀÌ ¹®Á¦´Â ¾îµð±îÁö³ª ¡®ÀçÁúÀº ÀÏÁ¤ÇÏÁö ¾ÊÁö¸¸ ÇÑÂÊ¿¡ ºÒÀ» ºÙ¿©¼­ Á¤È®È÷ 1½Ã°£¸¸¿¡ Ÿ´Â ¸·´ë±â°¡ ÀÖ´Ù¡¯°í °¡Á¤ÇÏ°í Ǫ´Â °ÍÀ̴ϱî¿ä. ½ÇÁ¦ ¼¼°è¿¡¼­´Â ÀÌ·± ¸·´ë±â¸¦ ¸¸µç´Ù°í Çصµ ¿©·¯ °¡Áö ¿ÀÂ÷°¡ ÀÖÀ» Å×´Ï ¡®Á¤È®È÷¡¯ 1½Ã°£¸¸¿¡ ŸÁö´Â ¾Ê°ÚÁö¿ä. ÇÏÁö¸¸ ÀÌ ¹®Á¦ÀÇ ¸·´ë±â´Â ³í¸®ÀûÀÌ°í °ü³äÀûÀÎ ¼¼°èÀÇ ¸·´ë±âÀ̱⠶§¹®¿¡ ±×·± Á¦¾àÀº ¾ø´Â ¼ÀÀÔ´Ï´Ù. -- Kunggom 2008-04-01 18:48:39

¸·´ë A-BÀÇ °æ¿ì, A¡æB: 1½Ã°£, B¡æA: 1½Ã°£ °É¸®Àݾƿä?

À§ÀÇ ¹®ÀåÀ» ±Ù°Å·Î ÇÏÀÚ¸é,
(ªÀº) ¸·´ë A1-B1ÀÇ °æ¿ì¿¡µµ, A1¡æB1: x½Ã°£, B1¡æA1: x½Ã°£ °É¸°´Ù°í ºÁ¾ß ÇÏÁö ¾Ê°Ú¾î¿ä? (x<1)

(¹°·Ð È­ÇйÝÀÀ, ¿Âµµ, ¹Ù¶÷, ±â¾Ð, °íµµ µî ¿©·¯ ¿ä¼ÒµéÀº ¾î´À °æ¿ì³ª ÅëÁ¦µÇ¾î¾ß ÇÏ°ÚÁö¿ä...) -- IsCho 2008-04-02 03:08:26

\isqrt
Submitted by ÀÛÀº³ª¹« @ 03-27 [09:40 pm]
\newcount\x \newcount\nx \def\mysqrt#1{\x=#1 \nx=\x \isqrt{#1} \big\lfloor\sqrt{#1}\big\rfloor=\number\x} \def\isqrt#1{\nx=#1 \divide\nx by\x \advance\nx by\x \divide\nx by2 \ifnum\x=\nx \else\x=\nx \isqrt{#1}\fi} $\mysqrt{361}$

Mar 26, 2008
\llap, \hfil, \hfilneg
Submitted by ÀÛÀº³ª¹« @ 03-26 [10:57 pm]
$$\displaylines{x\equiv x;\hfil\llap{(1)}\hfilneg\cr \hbox{if}\quad x\equiv y\quad\hbox{then}\quad y\equiv x;\hfil\llap{(2)}\hfilneg\cr \hbox{if}\quad x\equiv y\quad\hbox{and}\quad y\equiv z\quad\hbox{then}\quad x\equiv z.\hfil\llap{(3)}\hfilneg\cr}$$

Mar 23, 2008
Character constants
Submitted by ÀÛÀº³ª¹« @ 03-23 [11:56 pm]
¸ÅÅ©·Î¸¦ ÀÛ¼ºÇÏ´Ùº¸¸é, ¼ýÀÚ »ó¼ö(numeric constant)°¡ ÇÊ¿äÇÒ °æ¿ì°¡ Á¾Á¾ ÀÖ´Ù.

65¸¦ °ªÀ¸·Î °®´Â \const¶ó´Â À̸§ÀÇ ¼ýÀÚ »ó¼ö¸¦ ¸¸µé°íÀÚ ÇÑ´Ù. ¾î¶»°Ô ÇÏ¸é µÉ±î?

¸ÕÀú ¶°¿À¸£´Â ¹æ¹ýÀº,
\newcount\const \const=65
°¡Àå ¹«³­ÇÏÁö¸¸, Ä«¿îÆ® ·¹Áö½ºÅ͸¦ ÀÌ¿ëÇϹǷΠ¸Þ¸ð¸® »ç¿ë¿¡ ³¶ºñ¸¦ ÃÊ·¡ÇÏ´Â ´ÜÁ¡ÀÌ ÀÖ´Ù.

Ä«¿îÆ® ·¹Áö½ºÅ͸¦ »ç¿ëÇÏÁö ¾Ê´Â ¹æ¹ýÀ¸·Î ´ÙÀ½À» »ý°¢ÇÒ ¼ö ÀÖ´Ù.
\def\const{65}
ù¹ø° ¹æ¹ýº¸´Ù´Â ³´Áö¸¸, \const´Â ¸ÅÅ©·ÎÀ̹ǷΠ±× °ªÀ» ¾ò±â À§Çؼ­´Â Àü°³(expand) ÇØ¾ß ÇÏ°í, ÅØÀº ±× Ư¼º»ó ¼ýÀÚ°¡ ¾Æ´Ñ ÅäÅ«ÀÌ ³ª¿Ã ¶§±îÁö ÅäÅ«À» °è¼Ó Àü°³ÇϹǷÎ, \const ¹Ù·Î µÚ¿¡ ¸ÅÅ©·Î°¡ ³ª¿Â´Ù¸é, ±× ¸ÅÅ©·Îµµ Àü°³µÈ´Ù.

¸¶Áö¸· ¹æ¹ýÀº,
\chardef\const=65
ÀÌ ¹æ¹ýÀÌ ÇØ´äÀ̶ó°í ÇÒ ¼ö ÀÖ´Ù. À§¿Í °°ÀÌ Á¤ÀÇµÈ \const´Â ±×°¡ óÇÑ »óȲ¿¡ µû¶ó¼­ ¹®ÀÚ ¶Ç´Â ¼ýÀÚ·Î »ç¿ëµÉ ¼ö ÀÖ´Ù.
\const BCD
¿Í °°Àº »óȲ¿¡¼­ \const´Â \char65ÀÎ 'A'·Î »ç¿ëµÇ¾î ABCD°¡ µÈ´Ù. ÇÏÁö¸¸,
\advance\total by\const 
¶ó°í Çϸé, ¹®ÀÚ 'A'°¡ ¾Æ´Ñ ¼ýÀÚ 65·Î »ç¿ëµÇ¾î, \totalÀ̶ó´Â Ä«¿îÆ® ·¹Áö½ºÅÍ °ª¿¡ 65¸¦ ´õÇÏ°Ô µÈ´Ù.

ÀÌó·³ chardef·Î »ó¼ö¸¦ Á¤ÇÏ´Â ¹æ¹ýÀº ù ¹ø° °æ¿ìó·³ Ä«¿ìÆ® ·¹Áö½ºÅ͸¦ »ç¿ëÇÑ´Ù´Â ´ÜÁ¡µµ ¾ø°í, µÎ¹ø° ¹æ¹ýó·³ ¸ÅÅ©·Î¸¦ Àü°³ÇÒ ÇÊ¿äµµ ¾ø´Ù.

ÇÏÁö¸¸ chardef·Î´Â 0ºÎÅÍ 255±îÁöÀÇ ¼ýÀÚ ¹Û¿¡ »ç¿ëÇÒ ¼ö ¾ø´Ù.

255º¸´Ù Å« ¼ýÀÚ »ó¼ö´Â \mathchardef¸¦ »ç¿ëÇÏ¸é µÈ´Ù. ÀÌ´Â 32767("7FFF) ±îÁö °¡´ÉÇÏ´Ù

\everypar
Submitted by ÀÛÀº³ª¹« @ 03-23 [10:39 pm]
\font\init=cmbx10 scaled 2488 \def\Hang#1{\leavevmode \hbox to 0pt {\hss \raise 1.4ex \vbox to 0pt{\hbox to 1cm{\init #1\hss}\vss}}% } \hsize=8.5cm \parskip=10pt \parindent=0pt \everypar={\hangindent=1cm \hangafter=-2 \Hang} This is an old-fashioned mediaeval paragraph that has lots of text and a very long first sentence. The second sentence is also long, and only serves the purpose to make this more than 2 or so lines long. For good measure we throw in a third line which should make this four lines long, if not five with a little luck. Also, the second paragraph is an old-fashioned mediaeval paragraph that has lots of text and a very long first sentence. The second sentence is also long, and only serves the purpose to make this more than 2 or so lines long. For good measure we throw in a third line which should make this four lines long, if not five with a little luck. \bye

Mar 22, 2008
ÄĹé
Submitted by ÀÛÀº³ª¹« @ 03-22 [08:39 pm]
¾Æ¸£ÇîƼ³ª ¶¥¿¡ ¹ßÀ» µðµ±´ø ±× ¼ø°£

ÀÌ ±ÛÀ» ¾´ »ç¶÷Àº »ç¶óÁö°í ¾ø´Â ¼ÀÀÌ´Ù.

ÀÌ ±ÛÀ» ´Ù½Ã ±¸¼ºÇÏ¸ç ´Ùµë´Â ³ª´Â ´õ ÀÌ»ó ¿¹ÀüÀÇ ³»°¡ ¾Æ´Ï´Ù.

"¿ì¸®ÀÇ À§´ëÇÑ ¾Æ¸Þ¸®Ä« ´ë·ú"À» ¹æ¶ûÇÏ´Â µ¿¾È

³ª´Â »ý°¢º¸´Ù ´õ ¸¹ÀÌ º¯Çß´Ù. -- Che Guevara