#include<bits/stdc++.h> using namespace std; double a[605]; int main(){ int m,n; cin>>m; while(m--){ cin>>n; for(int i=1;i<=n;i++){ cin>>a[i]; } sort(a+1,a+n+1,greater<double>()); double len=0; for(int j=1;j<=n;j++){ len+=2*(sqrt(a[j]*a[j]-1)); if(len>=20){ cout<<j<<endl; break; } } } }