66 lines
916 B
Go
66 lines
916 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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"strings"
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)
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func check(err error) {
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if err != nil {
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panic(err)
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}
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}
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type beams struct {
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list map[int]int
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}
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func newBeams() beams {
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var b beams
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b.list = make(map[int]int)
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return b
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}
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func (b *beams) add(pos int) {
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b.list[pos]++
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}
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func (b *beams) del(pos int) {
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delete(b.list, pos)
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}
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func main() {
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file, err := os.Open("seven.txt")
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check(err)
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defer file.Close()
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scanner := bufio.NewScanner(file)
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scanner.Scan()
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text := scanner.Text()
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start := strings.IndexRune(text, 'S')
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beamSet := make(map[int]int)
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beamSet[start] = 1
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for scanner.Scan() {
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text := scanner.Text()
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for beam, nways := range beamSet {
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if text[beam] == '^' {
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beamSet[beam-1] += nways
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beamSet[beam+1] += nways
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delete(beamSet, beam)
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}
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}
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}
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timelines := 0
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for _, nways := range beamSet {
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timelines += nways
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}
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fmt.Printf("N splits: %d\n", timelines)
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}
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