Use the following format for your source code:

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```c++

Your source code here.

```

You can specify which language it is after the triple ` symbols.

C++ Example

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#include <iostream>
int main()
{
    std::cout << "Hello, world!" << std::endl;
    return 0;
}

Python Example

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import unittest
def median(pool):
    copy = sorted(pool)
    size = len(copy)
    if size % 2 == 1:
        return copy[(size - 1) / 2]
    else:
        return (copy[size/2 - 1] + copy[size/2]) / 2
class TestMedian(unittest.TestCase):
    def testMedian(self):
        self.failUnlessEqual(median([2, 9, 9, 7, 9, 2, 4, 5, 8]), 7)
if __name__ == '__main__':
    unittest.main()

Ruby Example

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# Get the parts of speech.
print "Please enter a past-tense verb: "
verb = gets.chomp
print "Please enter a noun: "
noun = gets.chomp
print "Please enter a proper noun: "
prop_noun = gets.chomp
print "Please enter a an adverb: "
adv = gets.chomp

# See where to put it.
print "Please enter a file name: "
fn = gets.chomp
handle = open(fn,"w")

# Go.
printf(handle, "%s got a %s and\n%s %s around the block.\n",
        prop_noun, noun, verb, adv)
handle.close

Javascript Example

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var visits = getCookie("counter");

if (visits) {
     visits = parseInt(visits) + 1;
     document.write("By the way, you have been here "+ visits +" times.");
}
else {
     visits = 1;
     document.write("By the way, this is your first time here.");
}

setCookie("counter", visits);