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- import java.util.Scanner;
- public class Main {
- public static void main(String[] args) {
- Scanner scanner = new Scanner(System.in);
- int passengers = Integer.parseInt(scanner.nextLine());
- int stops = Integer.parseInt(scanner.nextLine());
- int counter = 0;
- for (int i = 0; i < stops; i++) {
- int passengersOut = Integer.parseInt(scanner.nextLine());
- int passengersIn = Integer.parseInt(scanner.nextLine());
- passengers -= passengersOut;
- passengers += passengersIn;
- counter++;
- if (counter % 2 == 0) {
- passengers -= 2;
- } else {
- passengers += 2;
- }
- }
- System.out.printf("The final number of passengers is: %d.", passengers);
- }
- }
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