백준 8911. 거북이 :: 돼지개발자

출저 : https://www.acmicpc.net/problem/8911

"시뮬레이션"

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
 
public class Main {
 
    static int T;
    static int d,x,y;
    static int[] dx = {0,1,0,-1};
    static int[] dy = {1,0,-1,0};
    static int maxX,minX,maxY,minY;
    
    public static void main(String[] args) throws IOException {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        
        T = Integer.parseInt(br.readLine());
        
        while(T-- > 0) {
            char[] cmd = br.readLine().toCharArray();
            d = x = y = 0;
            maxX = maxY = minX = minY = 0;
            int size = cmd.length;
            
            for (int i = 0; i < size; i++) {
                switch(cmd[i]) {
                case 'F':
                    x += dx[d];
                    y += dy[d];
                    update();
                    break;
                case 'B':
                    x -= dx[d];
                    y -= dy[d];
                    update();
                    break;
                case 'L':
                    d = d - 1 == -1 ? 3 : d - 1;
                    break;
                case 'R':
                    d = d + 1 == 4 ? 0 : d + 1;
                    break;
                }
            }
            System.out.println(Math.abs(maxX - minX) * Math.abs(maxY - minY));
        }
    }
    
    static void update() {
        maxX = Math.max(maxX, x);
        minX = Math.min(minX, x);
        maxY = Math.max(maxY, y);
        minY = Math.min(minY, y);
    }
 
}