Teacher: In this task, you are given a country name and you need to return the calling code of the given country. Your output must be formatted as a plus sign (+), followed by the calling code number
Teacher: Now, understand the problem? If you are still confused, see the following example:
Abkhazia
Solution: +99544
Reason: +99544 is the calling code of the country called Abkhazia.

Now, solve this instance: Nauru
Student:
+674