04. Running in the park

import java.util.Scanner;

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

        int n = Integer.parseInt(scanner.nextLine());

        double sumDistance = 0.0;
        int totalCalories = 0;
        int caloriesPerMinute = 20;
        double totalDistance = 0;
        int totalMinutes = 0;

        for (int i = 0; i < n; i++) {
            int minutesRun = Integer.parseInt(scanner.nextLine());
            double distance = Double.parseDouble(scanner.nextLine());
            String metric = scanner.nextLine();

            if (metric.equals("m")) {
                distance = distance / 1000;
            }

            int currentCalories = minutesRun * caloriesPerMinute;

            totalMinutes += minutesRun;
            totalCalories += currentCalories;
            totalDistance += distance;
        }

        System.out.printf("He ran %.2fkm for %d minutes and burned %d calories.",
                totalDistance,
                totalMinutes,
                totalCalories);
    }
}