#include <iostream>
#include <fstream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include "pt4exam.h"
using namespace std;

// Для ввода используйте поток cin
// Для вывода результатов используйте поток cout,
// выводите символ пробела между полученными результатами,
// перед вещественными числами указывайте манипуляторы:
// fixed, setprecision(2);

struct TDeptor {
    int apartment;
    double dept;
    int entrance;
    int level;
};

typedef TDeptor* PDeptor;

struct TEntranceData {
    int entrance;
    vector<PDeptor> deptors;
};

typedef TEntranceData* PEntranceData;

bool CompareEntranceData(PEntranceData first, PEntranceData second) {
    int deptorsFirst = first->deptors.size();
    int deptorsSecond = second->deptors.size();

    if (deptorsFirst != deptorsSecond) {
        return deptorsFirst > deptorsSecond;
    }

    return first->entrance <= second->entrance;
}

void Solve()
{
    Task("ExamExt38");

    int count;
    cin >> count;

    vector<PEntranceData> entrances;
    for (int i = 0; i < 4; i++) {
        PEntranceData data = new TEntranceData;
        data->entrance = i;
        entrances.push_back(data);
    }

    string surname;
    double dept;
    int apartment;

    for (int i = 0; i < count; i++) {
        cin >> surname;
        cin >> dept;
        cin >> apartment;

        int entrance = (apartment - 1) / 36;
        int level = (apartment - entrance * 36) / 4;

        PDeptor deptor = new TDeptor;
        deptor->apartment = apartment;
        deptor->dept = dept;
        deptor->entrance = entrance;
        deptor->level = level;

        PEntranceData entranceData = entrances[entrance];
        entranceData->deptors.push_back(deptor);
    }

    sort(entrances.begin(), entrances.end(), CompareEntranceData);

    for (auto iter = entrances.begin(); iter != entrances.end(); iter++) {
        PEntranceData data = *iter;

        int deptorsCount = data->deptors.size();
        if (deptorsCount == 0)
            continue;

        double totalDept = 0;
        for (auto iterDeptors = data->deptors.begin(); iterDeptors != data->deptors.end(); iterDeptors++) {
            PDeptor deptor = *iterDeptors;
            totalDept += deptor->dept;
        }

        double avgDept = totalDept / deptorsCount;

        cout << deptorsCount << " ";
        cout << data->entrance + 1 << " ";
        cout << fixed << setprecision(2) << avgDept << endl;
    }
}