Competitions

# Linear arrays

# Sum of negative

Find the sum of negative integers in the given array.

#### Input

The first line contains the number **n**. The second line contains **n** integers, each no more than **100** by absolute value.

#### Output

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