Given the marks of all students, calculate the mean.
The first line of input contains an integer T denoting the number of test cases. For each test case there will be two lines. The first line contains the integer N denoting the number of students, and second line contains the N space seperated integrers denoting the marks of all the students.
Corresponding to each test case, print the floor value of the mean in a new line.
1 <= T <= 100
1 <= N <= 100
1 <= Marks <= 100
56 67 30 79
78 89 67 76
90 100 78 89 67
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