accumulator, err := readCode(data)

	accumulator, _, err := readCode(data)

	accumulator2, err := fixCode(data)
	if err != nil {
		return err
	}
	log.Println(accumulator2)

func readCode(data []string) (int, error) {

func readCode(data []string) (int, int, error) {

			return acc, nil

			return acc, i, nil
		}
		if i >= len(data) {
			return acc, i, nil

				return 0, err

				return 0, 0, err

				return 0, err

				return 0, 0, err

			return 0, fmt.Errorf("unrecognized instruction")

			return 0, 0, fmt.Errorf("unrecognized instruction")
		}
	}
}
func fixCode(data []string) (int, error) {
	for i := range data {
		line := strings.Split(data[i], " ")
		var l string
		switch line[0] {
		case "jmp":
			l = "nop " + line[1]
		case "nop":
			l = "jmp " + line[1]
		default:
			// no change
			continue
		}
		newdata := make([]string, len(data))
		copy(newdata, data)
		newdata[i] = l
		acc, last, err := readCode(newdata)
		if err != nil {
			return 0, err
		}
		if last == len(data) {
			return acc, nil

	return 0, fmt.Errorf("solution not found")