Rajat Singh , a student of Delhi University is learning the ways of finding the mean of N numbers. Rajat is a weak students as far as mathematics is concerned and his teacher gave lots of problem sets to find the means. Please help rajat with his homework.
Note:- Truncate the Fraction Part of result.

Input

First Line contains Number of testcases. First line of each test case contains single integer N and next line contains N integer.

Output

Output a single Integer mean of data set in a single line

Constraints
1 ≤ T ≤ 10
1 ≤ N ≤ 100
1 ≤ x ≤ 10^9

SAMPLE INPUT
1
4
10
12
23
24

SAMPLE OUTPUT
17

见题面

见题面