Population Counter [Mimi][JA]

import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Scanner;

public class _10_PopulationCounter {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        //  Country =>  City,   Population
        Map<String, Map<String, Integer>> population = new LinkedHashMap<>();

        String str = "";
        while (!"report".equals(str = sc.nextLine())) {

            String[] data = str.split("\\|");
            String country = data[1];
            String city = data[0];
            int p = Integer.parseInt(data[2]);

            population.putIfAbsent(country, new LinkedHashMap<>());
            population.get(country).putIfAbsent(city, 0);
            population.get(country).put(city, population.get(country).get(city) + p);

        }

        population.entrySet().stream().sorted((e1, e2) -> {
            long first = e1.getValue()
                    .values()
                    .stream()
                    .mapToLong(Long::valueOf)
                    .sum();
            long second = e2.getValue()
                    .values()
                    .stream()
                    .mapToLong(Long::valueOf)
                    .sum();
            return Long.compare(second, first);
        }).forEach(p -> {
            long sum = p.getValue().values().stream().mapToLong(Long::valueOf).sum();

            System.out.println(String.format("%s (total population: %d)",
                    p.getKey(), sum));

            p.getValue().entrySet().stream().sorted((pop1, pop2) -> {
                return Long.compare(pop2.getValue(), pop1.getValue());

            }).forEach((kvp) -> {
                System.out.println(String.format("=>%s: %d", kvp.getKey(), kvp.getValue()));
            });
        });
    }
}