/**
 * Given two strings, concatenate them and add the complement operator (~) at the end.
 *
 * @param word1 The first string.
 * @param word2 The second string.
 * @return The concatenated string with the complement operator at the end.
 */
fun concatenateNotStrings(word1: String, word2: String): String {

    return word1 + word2 + "~"
}
/**
 * Given two strings, concatenate them and add the complement operator (~) at the end.
 *
 * @param word1 The first string.
 * @param word2 The second string.
 * @return The concatenated string with the complement operator at the end.
 */
fun concatenateNotStrings(word1: String, word2: String): String {
/**
 * Given two strings, concatenate them and add the complement operator (~) at the end.
 *
 * @param word1 The first string.
 * @param word2 The second string.
 * @return The concatenated string with the complement operator at the end.
 */
fun concatenateNotStrings(word1: String, word2: String): String {

    return word1 + word2 + "~"
}