aoc2022/d07/part1.awk

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BEGIN { LIMIT=100*1000 }
$2 == "ls" || $1 == "dir" { next}
$2 == "cd" && $3 == ".." {
if (S[depth]<=LIMIT) {
R+=S[depth]
}
S[depth]=0
depth -= 1
}
$2 == "cd" && $3 != ".." { depth += 1; P[depth]=$3; }
NF == 2 {
for (i=1;i<=depth;i++) {
S[i]+=$1
}
}
END { print R }