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<?php
$a = 10;
$b = 20;
$c = $a + $b;
$d = $a * $b;
$e = $d % $c;
echo $e;
?>
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wget https://dl.google.com/go/go1.17.linux-amd64.tar.gz
sudo tar -xvf go1.17.linux-amd64.tar.gz
sudo mv go /usr/local
sudo ln -s /usr/local/go/bin/* /usr/bin
rm go1.17.linux-amd64.tar.gz
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sudo add-apt-repository ppa:longsleep/golang-backports
sudo apt update