Combine AoC Repos

2015/day14/main.go

@@ -0,0 +1,88 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Println("Usage: day14 <seconds>")
+		os.Exit(1)
+	}
+	raceTime := os.Args[1]
+	var input []string
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		input = append(input, scanner.Text())
+	}
+
+	var allDeer []deer
+	for i := range input {
+		parts := strings.Split(input[i], " ")
+		allDeer = append(allDeer, *createDeer(
+			parts[0],
+			mustAtoi(parts[3]),
+			mustAtoi(parts[6]),
+			mustAtoi(parts[13]),
+		))
+	}
+	fmt.Println("Race ends at " + raceTime)
+	endTime := mustAtoi(raceTime)
+	deerStars := make(map[string]int)
+	for i := 1; i <= endTime; i++ {
+		var topVal int
+		for j := range allDeer {
+			tmp := allDeer[j].travelFor(i)
+			if tmp > topVal {
+				topVal = tmp
+			}
+		}
+		for j := range allDeer {
+			if allDeer[j].travelFor(i) == topVal {
+				deerStars[allDeer[j].name]++
+			}
+		}
+	}
+	for i := range deerStars {
+		fmt.Println(i + ": " + strconv.Itoa(deerStars[i]))
+	}
+}
+
+type deer struct {
+	name         string
+	speed        int
+	moveDuration int
+	restDuration int
+}
+
+func createDeer(n string, s, m, r int) *deer {
+	d := deer{n, s, m, r}
+	return &d
+}
+
+func (d *deer) travelFor(s int) int {
+	var dist int
+	for s > 0 {
+		if s > d.moveDuration {
+			dist += d.speed * d.moveDuration
+		} else {
+			dist += d.speed * s
+		}
+		s -= d.moveDuration
+		s -= d.restDuration
+	}
+	return dist
+}
+
+func mustAtoi(s string) int {
+	var i int
+	var err error
+	if i, err = strconv.Atoi(s); err != nil {
+		fmt.Println("Tried to atoi " + s)
+	}
+	return i
+}