#include <iostream>
#include <string>

using namespace std;



int main() {

	int limitBadGrades;
	cin >> limitBadGrades;
	cin.ignore();


	string problemName;
	getline(cin >> ws, problemName);
	int gradeSum = 0;
	int gradeCount = 0;
	string lastProblemName = "";
	int badGradesCounter = 0;

	while (problemName != "Enough")
	{
		int grade;
		cin >> grade;
		cin.ignore();

		gradeSum += grade;
		gradeCount++;
		lastProblemName = problemName;

		if (grade <= 4)
		{
			badGradesCounter++;
		}
		if (badGradesCounter == limitBadGrades)
		{
			break;
		}

		getline(cin, problemName);
	}

	if (problemName == "Enough")
	{
		cout.setf(ios::fixed);
		cout.precision(2);

		double averageGrade = gradeSum * 1.0 / gradeCount;
		cout << "Average score: " << averageGrade << endl;
		cout << "Number of problems: " << gradeCount << endl;
		cout << "Last problem: " << lastProblemName;
	}

	if (badGradesCounter == limitBadGrades)
	{
		cout << "You need a break, " << badGradesCounter << " poor grades.";
	}


	return 0;
}