func solver(in *ProblemReader.ProblemReader) string {
words := in.Words()
reversed := make([]string, len(words))
for pos, word := range words {
reversed[len(words)-pos-1] = word
}
return strings.Join(reversed, " ")
}
func readTrip(in *ProblemReader.ProblemReader, src string, dst string) trip {
sched := in.Words()
return trip{src, dst, parseT(sched[0]), parseT(sched[1])}
}