Problem: 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

Solution (in PYTHON):

Solution:
#!/usr/bin/env python

tc = int(raw_input())
means = []

for i in xrange(tc):

    N = int(raw_input())
    sum_N = 0

    for i in xrange(N):
        sum_N += int(raw_input())

    means.append(sum_N/N)

for mean in means:

    print mean