题解 | #坐标移动#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextLine()) { // 注意 while 处理多个 case
            String line = in.nextLine();
            
            int x = 0, y = 0;
            String[] commands = line.split(";");
            for (String command : commands) {
                if (command.length() < 2) continue;
                char com = command.charAt(0);
                int move = 0;
                try {
                    move = Integer.parseInt(command.substring(1));
                } catch (NumberFormatException e) {
                    continue;
                }
                
                switch (com) {
                    case 'A':
                        x -= move;
                        break;
                    case 'S':
                        y -= move;
                        break;
                    case 'W':
                        y += move;
                        break;
                    case 'D':
                        x += move;
                        break;
                }
            }
            System.out.printf("%d,%d", x, y);
        }
    }
}