As you can see that there is someone else that is in love with Hinata. This has now set me in a sad mood so I will give you an easy problem.(No one wants to think when they are sad). You are now given power of all shinobis in naruto. You have to find the difference between the maximum and the minimum power of all shinobis.
The first line has N: The number of shinobis.
Then N integer follows in next line.
Output the difference in power between the strongest and weakest shinobi.
All integers are positive and in range of int.
N <= 100000, All Ai are positive.