Problems
Sum of negative
Sum of negative
Find the sum of negative integers in the given array.
\InputFile
The first line contains the number $n$. The second line contains $n$ integers, each no more than $100$ by absolute value.
\OutputFile
Print the sum of negative integers in the array. If there is no negative integers in array, print $0$.
Input example #1
5 -5 6 8 -3 0
Output example #1
-8