C++ :

#include <iostream>
#include <string>
#include <fstream>
using namespace std;
int main()
{
	//ifstream cin;
	//ofstream cout;
	//cin.open("A_1.in");
	//cout.open("A_1.out");
	double highest=0;
	double tmp;
	int testcase;
	cin>>testcase;
	while(testcase--)
	{
		cin>>tmp;
		if(tmp<1.4 || tmp>2.26)
			continue;
		if(tmp>highest)
			highest=tmp;
	}
	cout<<highest<<endl;
	
	return 0;
}