31 lines
725 B
Go
31 lines
725 B
Go
package main
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import (
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"bufio"
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"fmt"
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"os"
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"aoc2022/day03/common"
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)
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func main() {
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rucksacks := common.Parse(*bufio.NewScanner(os.Stdin))
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sum := 0
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for i := 0; i < len(rucksacks); i+=3 {
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rucksack := rucksacks[i]
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commonItems := append(rucksack.GetCompartment(1).GetItems(), rucksack.GetCompartment(2).GetItems()...)
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for j := 1; j <= 2; j++ {
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for k := 0; k < len(commonItems); k++ {
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item := commonItems[k]
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if !rucksacks[i+j].GetCompartment(1).ContainsItem(item) && !rucksacks[i+j].GetCompartment(2).ContainsItem(item) {
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commonItems = append(commonItems[:k], commonItems[k+1:]...)
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k--
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}
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}
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}
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sum += commonItems[0]
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}
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fmt.Println(sum)
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}
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