42 lines
549 B
Go
42 lines
549 B
Go
package main
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import (
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"bufio"
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"fmt"
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"log"
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"os"
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)
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func main() {
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f, err := os.Open("input")
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if err != nil {
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log.Fatalf("%+v", err)
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}
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defer f.Close()
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scanner := bufio.NewScanner(f)
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scanner.Split(bufio.ScanLines)
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bits := make([]int, 12)
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for scanner.Scan() {
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num := scanner.Text()
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for n := 0; n < 12; n++ {
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if num[n] == '1' {
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bits[n]++
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}
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}
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}
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gamma := 0
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epsilon := 0
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for n := 0; n < 12; n++ {
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gamma *= 2
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epsilon *= 2
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if bits[n] > 500 {
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gamma++
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} else {
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epsilon++
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}
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}
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fmt.Println(gamma * epsilon)
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}
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