After a slew of poor test results, Ms. Dyke has decided to give the students who pass
her tests candy as incentive for everyone to work harder. Unfortunately, candy is
apparently really expensive and the department has little money. To work around this,
she has decided to adjust her student's marks (by adding or subtracting some constant
value from each mark) in order to minimize the amount of candy she needs to give out.
However, she can't have the class average be less than or she'll get in trouble!
Ms. Dyke has picked you to figure out what is the minimum number of candy she can
give out, don't let her down!
Input Specification
The first line of the input provides the number of test cases,
.
test
cases follow. The first line of each test case provides the number of students in her
class,
. The next
lines each contain a real number
,
the mark of one of her students. Marks are given in increasing order and no two marks
are the same.
Output Specification
A single integer denoting the minimum amount of candy she needs to give out.
Sample Input
2
3
60.0
70.0
80.0
3
0.0
0.15
0.3
Sample Output
2
2
Explanation for Sample
In the first case, the average is so she can lower everyone's mark by
,
meaning two people passed the test. In the second case, she has to raise the
mark by at least
, so the two highest marks must be above average.
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