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:
t= input()

for x in range(0,t):
    n=input()
    s=0
    a=[]
    for y in range(0,n):
        m=input()
        a.append(m)
    for y in range(0,n):
        s=s+a[y]
    s=s/n
    print s