#include<iostream>
#include<cmath>
#include<algorithm>
#include<cstring>
using namespace std;
float Tri(float radius , float width){
return 2sqrt(radiusradius - width*width);
}
bool cmp(float a,float b){
return a>b;
}
int main(){
int m,n;
float a[601], sum,temp;
cin>>m;
while (m--){
sum = 0.0;
cin>>n;
for (int i = 0; i < n; i++){
scanf("%f", &a[i]);
}
}
