import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

class part1{
    public static void main(String[] args){
        File input = new File("Day 2/Justin/Java/input.txt");

        try{
            // Get the file, and start to read it
            Scanner fileIn = new Scanner(input);

            int depth = 0;
            int movement = 0;

            do{
                String inputLine = fileIn.nextLine();
                System.out.println(inputLine);
                String[] operations = inputLine.split(" ");
                switch(operations[0]){
                    case "forward":
                        movement += Integer.parseInt(operations[1]);
                        break;
                    case "up":
                        depth -= Integer.parseInt(operations[1]);
                        break;
                    case "down":
                        depth += Integer.parseInt(operations[1]);
                        break;
                    default:
                        break;
                }
            } while(fileIn.hasNextLine());

            fileIn.close();

            System.out.println(depth * movement);           

        } catch(FileNotFoundException e){
            e.printStackTrace();
        }
        
    }
}