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@@ -0,0 +1,43 @@
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+package main
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+
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+import (
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+ "fmt"
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+ "io/ioutil"
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+ "log"
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+ "os"
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+ "strings"
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+)
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+
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+func readInput(file string) [][]string {
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+ content, err := ioutil.ReadFile(file)
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+ if err != nil {
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+ log.Fatal(err)
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+ }
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+
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+ lines := strings.Split(string(content), "\n")
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+ var input [][]string
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+ for _, line := range lines {
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+ if line == "" {
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+ continue
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+ }
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+
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+ points := strings.Split(line, "-")
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+ if len(points) != 2 {
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+ log.Fatal("Invalid input")
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+ }
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+
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+ input = append(input, []string{points[0], points[1]})
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+ input = append(input, []string{points[1], points[0]})
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+ }
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+
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+ return input
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+}
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+
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+func main() {
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+ if len(os.Args) < 2 {
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+ log.Fatal("Please provide a file name as argument")
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+ }
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+
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+ input := readInput(os.Args[1])
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+ fmt.Println(input)
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+}
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