BEGIN {
	FS = "."
	MAJOR = 0
	MINOR = 0
	CUSTOM = 0
}

	{
		if ($3 > MAJOR)
			MAJOR = $3
		if ($4 > MINOR)
			MINOR = $4
		if ($5 > CUSTOM)
			CUSTOM = $5
	}
END {
	CUSTOM = CUSTOM + 1
	printf "%d.%d.%d", MAJOR, MINOR, CUSTOM
}