$2 == "ls" || $1 == "dir" { next}
$2 == "cd" && $3 != ".." {
	depth += 1
	l = ""
	for (i=1;i<depth;i++) {
		l = l "___ "
	}
	print l  $3 "/"
}
NF == 2 {
	l = ""
	for (i=1;i<=depth;i++) {
		S[i]+=$1
		l = l "___ "
	}
	print l  $2, "(" $1 ")"
}
$2 == "cd" && $3 == ".." {
	l = ""
	for (i=1;i<depth;i++) {
		l = l "___ "
	}
	print l "=>", S[depth]
	S[depth]=0
	depth -= 1
}

# part 1
# awk -f print.awk input | grep -F '=>' | awk 'NF>2 && $(NF)>(100*1000)' | awk '{ print $NF }' | sum0

# part 2
# TOTAL  70'000'000
# UPDATE 30'000'000
# ROOT   43'837'783
# FREE   26'162'217
# NEED    3'837'783
# list all sizes
# awk -f print.awk input | grep -F '=>' | awk 'NF>2 && $(NF)>(100*1000)' | awk '{ print $NF }' | sort -n
# find number at the bottom of the list that is >=NEED
# ...
# 2882941
# 3572786
# 3718312  <= too low
# 4183246  <= this one
# 5406295
# 5928595
# ...