89 lines
1.5 KiB
Go
89 lines
1.5 KiB
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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"strconv"
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"strings"
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)
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func main() {
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if len(os.Args) < 2 {
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fmt.Println("Usage: day14 <seconds>")
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os.Exit(1)
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}
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raceTime := os.Args[1]
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var input []string
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scanner := bufio.NewScanner(os.Stdin)
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for scanner.Scan() {
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input = append(input, scanner.Text())
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}
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var allDeer []deer
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for i := range input {
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parts := strings.Split(input[i], " ")
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allDeer = append(allDeer, *createDeer(
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parts[0],
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mustAtoi(parts[3]),
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mustAtoi(parts[6]),
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mustAtoi(parts[13]),
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))
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}
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fmt.Println("Race ends at " + raceTime)
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endTime := mustAtoi(raceTime)
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deerStars := make(map[string]int)
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for i := 1; i <= endTime; i++ {
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var topVal int
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for j := range allDeer {
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tmp := allDeer[j].travelFor(i)
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if tmp > topVal {
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topVal = tmp
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}
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}
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for j := range allDeer {
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if allDeer[j].travelFor(i) == topVal {
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deerStars[allDeer[j].name]++
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}
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}
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}
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for i := range deerStars {
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fmt.Println(i + ": " + strconv.Itoa(deerStars[i]))
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}
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}
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type deer struct {
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name string
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speed int
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moveDuration int
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restDuration int
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}
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func createDeer(n string, s, m, r int) *deer {
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d := deer{n, s, m, r}
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return &d
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}
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func (d *deer) travelFor(s int) int {
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var dist int
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for s > 0 {
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if s > d.moveDuration {
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dist += d.speed * d.moveDuration
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} else {
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dist += d.speed * s
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}
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s -= d.moveDuration
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s -= d.restDuration
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}
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return dist
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}
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func mustAtoi(s string) int {
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var i int
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var err error
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if i, err = strconv.Atoi(s); err != nil {
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fmt.Println("Tried to atoi " + s)
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}
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return i
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}
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