package topcoder;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.util.*;

public class TopCoder {

public static void main(String[] args) throws IOException {

Map<Float, ArrayList<String>> data = new TreeMap<>(Collections.reverseOrder());

Scanner sc = new Scanner(new FileReader("input.txt"));

while (sc.hasNextLine()){

String line = sc.nextLine();

if(line.contains(" ")){

StringTokenizer st = new StringTokenizer(line, " ");

float points = Float.valueOf(st.nextToken());

String name = st.nextToken();

if(data.containsKey(points)){

ArrayList<String> arr = data.get(points);

arr.add(name);

data.put(points, arr);

}else {

data.put(points, new ArrayList<>(Collections.singletonList(name)));

}

}

}

int count = 0;

StringBuilder rating = new StringBuilder();

for(Float points : data.keySet()){

String formattedDouble = String.format("%.2f", points).replaceAll(",", ".");

Collections.sort(data.get(points));

for(String name : data.get(points)){

rating.append(formattedDouble).append(" ").append(name).append("\n");

count++;

}

}

String result = String.valueOf(count) + "\n" + String.valueOf(rating);

FileWriter out = new FileWriter("output.txt");

out.write(result);

out.close();

}

}