#include"pch.h"
#include<iostream>
#include<vector>
#include<algorithm>
#include<stdio.h>
using namespace std;
#define endl '\n'
typedef long long ll;

const int maxn = 1e5 + 10;
int n, B, L, D;
int books[maxn], freq[1000000], uniqueBooksCounter, numberOfLibrariesWithNoUniqueBooks;
double avgFreq, avgUniqueBooksInLibrary;

struct library {

	int n, signup, booksPerDay, uniqueBooks;
	vector < int > ids;
	double avgUniqueBooks;
	library() {
		n = signup = booksPerDay = uniqueBooks = 0;
		avgUniqueBooks = 0;
	}
	bool operator<(const library &second)
		const {
		return avgUniqueBooks > second.avgUniqueBooks;
	}
};

vector < library > libraries;

int main() {
ios_base::sync_with_stdio(0); cin.tie(NULL); cout.precision(10); cout << fixed;
freopen("c.txt", "r", stdin);
cin >> B >> L >> D;

for (int i = 0; i < B; i++) cin >> books[i];

libraries.clear();

for (int i = 0, n, signup, booksPerDay; i < L; i++) {
	cin >> n >> signup >> booksPerDay;

	library lib;
	lib.n = n;
	lib.signup = signup;
	lib.booksPerDay = booksPerDay;

	for (int j = 0, id; j < n; j++) {
		cin >> id;
		freq[id]++;
		lib.ids.push_back(id);
	}

	libraries.push_back(lib);
	}
	for (int i = 0; i < B; i++) {
		if (freq[i] == 1)
			uniqueBooksCounter++;
		avgFreq += freq[i];
	}
	for (int i = 0; i < L; i++) {
		for (int j = 0; j < libraries[i].n; j++)
			if (freq[libraries[i].ids[j]] == 1)
				libraries[i].uniqueBooks++;
		libraries[i].avgUniqueBooks = (double)libraries[i].uniqueBooks / libraries[i].n;
		avgUniqueBooksInLibrary += libraries[i].avgUniqueBooks;
	}
	sort(libraries.begin(), libraries.end());

	for (int i = 0; i < L; i++)
		if (!libraries[i].uniqueBooks)
			numberOfLibrariesWithNoUniqueBooks++;

	avgUniqueBooksInLibrary /= L;
	avgFreq /= B;
	cout << "Number of days is " << D << endl;
	cout << endl;
	cout << "Number of libraries is " << L << endl;
	cout << endl;
	cout << "Number of books is " << B << endl;
	cout << endl;
	cout << "Number of unique books is " << uniqueBooksCounter << endl;
	cout << endl;
	cout << "Average frequency for books is " << avgFreq << endl;
	cout << endl;
	cout << "Average unique books for each library is " << avgUniqueBooksInLibrary << endl;
	cout << endl;
	cout << "maximum number of unique books ratio in library is " << libraries[0].avgUniqueBooks << endl;
	cout << endl;
	cout << "minimum number of unique books ratio in library is " << libraries.back().avgUniqueBooks << endl;
	cout << endl;
	cout << "Number of libraries with no unique books " << numberOfLibrariesWithNoUniqueBooks << endl;
	cout << endl;
}