even lines

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Problem

Display all even lines.

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Sample input:_

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Sample output:

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10

Sample input:_

To invent, you need a good imagination and a pile of junk.
                -- Thomas Edison
On a paper submitted by a physicist colleague:

"This isn't right.  This isn't even wrong."
                -- Wolfgang Pauli
"It's a summons."
"What's a summons?"
"It means summon's in trouble."
		-- Rocky and Bullwinkle
Never tell a lie unless it is absolutely convenient.
Anyone who cannot cope with mathematics is not fully human.  At best he
is a tolerable subhuman who has learned to wear shoes, bathe and not
make messes in the house.
		-- Lazarus Long, "Time Enough for Love"
If you cannot convince them, confuse them.
		-- Harry S Truman
Your fault: core dumped
And I heard Jeff exclaim,
As they strolled out of sight,
"Merry Christmas to all --
You take credit cards, right?"
		-- "Outsiders" comic
"...and the fully armed nuclear warheads, are, of course, merely a
courtesy detail."
"I dread success.  To have succeeded is to have finished one's business
on earth, like the male spider, who is killed by the female the moment
he has succeeded in his courtship.  I like a state of continual
becoming, with a goal in front and not behind."
		-- George Bernard Shaw
f u cn rd ths, itn tyg h myxbl cd.
A classic is something that everybody wants to have read and nobody
wants to read.
		-- Mark Twain

Sample output:

                -- Thomas Edison

                -- Wolfgang Pauli
"What's a summons?"
		-- Rocky and Bullwinkle
Anyone who cannot cope with mathematics is not fully human.  At best he
make messes in the house.
If you cannot convince them, confuse them.
Your fault: core dumped
As they strolled out of sight,
You take credit cards, right?"
"...and the fully armed nuclear warheads, are, of course, merely a
"I dread success.  To have succeeded is to have finished one's business
he has succeeded in his courtship.  I like a state of continual
		-- George Bernard Shaw
A classic is something that everybody wants to have read and nobody
		-- Mark Twain

Ranking

Ruby _

Ruby2 _

Perl _

Python _

Python3 _

PHP _

Pike _

Scheme _

Common LISP _

Arc _

Clojure _

Io _

JavaScript _

Lua _

Tcl _

Xtal _

Crystal _

Kite _

SNOBOL _

Icon _

REXX _

Cyan _

Smalltalk _

Prolog _

Forth _

BASIC _

Perl6 _

Erlang _

J _

A+ _

K _

Jelly _

Mind _

C _

C++ _

D _

Go _

Rust _

OCaml _

Haskell _

Ada _

ObjC _

Java _

Pascal _

Fortran _

C# _

Nemerle _

COBOL _

Curry _

Chapel _

Maxima _

Octave _

REBOL _

Asymptote _

Euphoria _

AWK _

sed _

jq _

Bash _

Bash (builtins) _

Zsh _

Fish _

make _

wake _

bc _

xgawk _

m4 _

Postscript _

R _

VHDL _

Brainfuck _

MNNBFSL _

Whitespace _

Befunge _

Aheui _

><> _

GolfScript _

gs2 _

Nibbles _

FlogScript _

Burlesque _

FerNANDo _

CLC-INTERCAL _

Unlambda _

Lazy-K _

Grass _

Universal Lambda _

gas _

x86 _

z80 _

Piet _

Vim _

goruby _

Groovy _

Scala _

Logo _

Language Ranking_

Referer

Note that, they may contain spoilers.

• http://64.233.167.104/search?q=cache:TtyasMiv3vQJ:ya.maya.st/d/200702b.html+Delivered-To+%E3%83%98%E3%83%83%E3%83%80&hl=ja&ct=clnk&cd=17&gl=jp&client=firefox
• http://jijixi.azito.com/cgi-bin/diary/index.rb?date=20070209
• http://d.hatena.ne.jp/suiginto/searchdiary?word=%2a%5bOCaml%5d
• http://longlong.way-nifty.com/blog/2007/12/index.html
• http://d.hatena.ne.jp/suiginto/20070224
• http://d.hatena.ne.jp/shinichiro_h/searchdiary?word=%2a%5bGolf%5d
• http://d.hatena.ne.jp/shinichiro_h/searchdiary?word=*%5BGolf%5D
• http://shinh.skr.jp/m/
• http://d.hatena.ne.jp/suiginto/20070215
• http://d.hatena.ne.jp/ytqwerty/searchdiary?of=10&word=%2a%5bAda%5d
• http://longlong.way-nifty.com/blog/
• http://d.hatena.ne.jp/ytqwerty/searchdiary?word=*[Ada]
• http://jijixi.azito.com/cgi-bin/diary/index.rb?date=20070214
• http://www.math.sansu.org/u/diary/?date=20070416
• http://72.14.235.104/search?q=cache:TtyasMiv3vQJ:ya.maya.st/d/200702b.html+anarchy+golf&hl=ja&ct=clnk&cd=10&gl=jp&lr=lang_ja&client=firefox
• http://72.14.235.104/search?q=cache:E-2pW81ap0EJ:jarp.does.notwork.org/diary/200702a.html+unix+%E6%94%B9%E8%A1%8C%E5%89%8A%E9%99%A4+%E5%81%B6%E6%95%B0%E8%A1%8C%E3%80%80sed&hl=ja&ct=clnk&cd=2&gl=jp
• http://72.14.235.104/search?q=cache:zrbZ9AYaDOwJ:d.hatena.ne.jp/ideo/20070907+%22even+lines%22&hl=ja&ct=clnk&cd=11&gl=jp&lr=lang_ja&client=firefox
• http://cache.yahoofs.jp/search/cache?p=unix+grep+%E5%81%B6%E6%95%B0%E8%A1%8C&ei=UTF-8&fr=top_v2&x=wrt&u=jarp.does.notwork.org/diary/200702a.html&w=unix+grep+%22%E5%81%B6%E6%95%B0+%E8%A1%8C%22&d=YVcyoPL9PvP_&icp=1&.intl=jp
• http://shinh.skr.jp/m/?date=200702
• http://mono.kmc.gr.jp/~yhara/files/anagol.html
• http://jijixi.azito.com/cgi-bin/diary/index.rb?date=20070205
• http://d.hatena.ne.jp/suiginto/searchdiary?of=5&word=%2a%5bOCaml%5d
• http://d.hatena.ne.jp/suiginto/20070224/1172300028
• http://72.14.253.104/search?q=cache:0bbYj4zqmO0J:http://d.hatena.ne.jp/shinichiro_h/20070220+permutater&lr=lang_ja&hl=ja&ie=UTF-8&output=html&client=nttx
• http://www.nmt.ne.jp/~ysas/diary/?05101634
• http://jijixi.azito.com/cgi-bin/diary/index.rb?date=20070201
• http://72.14.235.104/search?q=cache:0bbYj4zqmO0J:d.hatena.ne.jp/shinichiro_h/20070220+permutater&hl=ja&ct=clnk&cd=1&lr=lang_ja
• http://jijixi.azito.com/cgi-bin/diary/index.rb?date=20070202
• http://www.mokehehe.com/assari/index.php?Haskell%2Fgolf
• http://d.hatena.ne.jp/suiginto/20070215/1171573495
• http://jijixi.azito.com/cgi-bin/diary/index.rb?category=Python
• http://longlong.way-nifty.com/
• http://www.nmt.ne.jp/~ysas/diary/
• http://www.math.sansu.org/u/diary/?date=200704
• http://jijixi.azito.com/cgi-bin/diary/index.rb?date=20070216
• http://jarp.does.notwork.org/diary/200702a.html
• http://ya.maya.st/d/200702b.html
• http://d.hatena.ne.jp/shinichiro_h/20070220

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