26 lines
542 B
Bash
26 lines
542 B
Bash
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#!/usr/bin/env bash
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# Filter out do(), don't(), and mul()
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# then strip out tails to get do and don
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# strip out mul() to get numbers
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grep -Po 'do\(\)|don(.)?t\(\)|mul\([0-9]+,[0-9]+\)' input |
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grep -Po 'don|do|mul\([0-9]+,[0-9]+\)' |
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sed -E 's/^mul\(([0-9]+),([0-9]+)\)/\1 \2/g' |
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awk '
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BEGIN {
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total = 0
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todo = 1
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}
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{
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if ($1 == "don") {
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todo = 0
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} else if ($1 == "do") {
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todo = 1
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} else if (todo == 1){
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total += $1 * $2
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}
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}
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END {
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print total
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}'
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