#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<vector>
#include<cmath>
using namespace std;
double ri[601];
int com(double a,double b){
return a>b;
}
int main(){
int n,m;
scanf("%d",&n);
while(n--){
scanf("%d",&m);
for(int i=0;i<m;i++){
scanf("%lf",&ri[i]);
}
sort(ri,ri+m,com);
int ans=0,i=0;
double sum=0;
while(sum<20){
double temp=sqrt((ri[i]*ri[i])-1);
sum+=(2*temp);
ans++;
i++;
}
printf("%d\n",ans);
}
return 0;
}
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