swap lines

Submit

Language is selected by the extension of the file. See the list of supported languages to know the extension of your language.

Problem

swap even and odd lines

Options

exec is denied

no deadline, the server will not save your submission

Sample input:_

1
2
3
4
5
6
7
8
9
10

Sample output:

2
1
4
3
6
5
8
7
10
9

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
To invent, you need a good imagination and a pile of junk.

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

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Referer

Note that, they may contain spoilers.

• http://mono.kmc.gr.jp/~yhara/files/anagol.html
• http://www.math.sansu.org/u/diary/?date=20070416
• http://www.math.sansu.org/u/diary/?date=200704
• http://ya.maya.st/d/200702b.html
• http://www.garbagecollect.jp/~usa/d/200702b.html

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