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sub add{
    my $value1 = $_[0];
    my $value2 = $_[1];
    my $result = ($value1 + $value2);
}

sub add{
    my $value1 = $_[0];
    my $value2 = $_[1];
    ($value1 + $value2);
}

sub add{
    ($_[0] + $_[1]);
}

sub add{
    return ($_[0] + $_[1]);
}