#include <fstream>
#include <cmath>
using namespace std;
int main ()
{
int n, i, V[20];
ifstream f("date.in");
ofstream g("Date.out");
f >> n;
for (i = 1; i <= n; i ++)
f >> V[i];
if (3sqrt (V[i] == 0)
cout << 3sqrt v[i];;
if (if (3sqrt (V[i] == 0)
cout << 4sqrt V[i];
return 0 }