for scanNo, sd := range sds {

		for scanNo := range sds {

				for _, sl := range sd.beacons {

				for _, sl := range sds[scanNo].beacons {

							sd.sPos = scanLine{-tmp.x, -tmp.y, -tmp.z}
							for _, line := range sd.beacons {

							sds[scanNo].sPos = scanLine{-tmp.x, -tmp.y, -tmp.z}
							for _, line := range sds[scanNo].beacons {

	var max int
	for _, first := range sds {
		for _, second := range sds {
			if d := distance(first.sPos, second.sPos); d > max {
				max = d
			}
		}
	}
	log.Println(max)

}
func distance(first, second scanLine) int {
	return abs(first.x-second.x) + abs(first.y-second.y) + abs(first.z-second.z)

func abs(in int) int {
	if in < 0 {
		return -in
	}
	return in
}