Ini adalah musim panas yang kering di padang rumput. Keempat petani di daerah tersebut menyadari bahwa mereka dapat memojokkan pasar dengan jagung dengan membakar tanaman tetangga mereka. Tetapi mereka membutuhkan strategi untuk melakukannya; di situlah Anda masuk.

Tugas Anda adalah menulis bot untuk memberi tahu petani apa yang harus dibakar. Tujuannya adalah untuk menyelesaikan permainan dengan area tanah tidak terbakar terbesar. Lapangan bermain adalah kotak 32x32. Setiap sel mungkin salah satu dari yang berikut:

. - Ground

@ - A bot

# - Ash

W - Wet ground

1,2,3,4,5, or 6 - Fire

Api tumbuh dalam intensitas dengan 1 setiap belokan. Setelah 3 atau lebih tinggi, itu akan mengatur sel di sebelahnya (horizontal atau vertikal) terbakar. Setelah api mengenai 6, itu berubah menjadi abu.

Pada setiap belokan, bot menerima sebagai STDIN sebagai berikut: bot mulai x, bot mulai y, posisi bot saat ini x, posisi bot saat ini y, dan papan, dipisahkan oleh baris baru. Sebuah contoh:

8
22
6
24
................................
................................
................................
.....................1..........
....................1#1.........
...................1#363........
....................16@1........
.....................31.........
................................
.........1.1....................
........15#62...................
........15@2....................
.........32.....................
................................
................................
................................
................................
................................
................................
................................
................................
................................
....4.1.........................
.....1#3........................
.....@3.........................
.....W..........................
................................
................................
................................
................................
................................
................................

(dalam hal ini Anda adalah bot di kiri bawah).

Anda harus menampilkan tiga karakter, dengan baris baru opsional, yang mewakili yang berikut:

Pindahkan - salah satunya L, R, U, D, or S (stay)

Aksi - salah satunya B (burn), P (pour water) or X (do nothing)

Arah - salah satu dari L, R, U, D or S- mengontrol sel tempat Anda melakukan tindakan

Api tidak memengaruhi bot.

Ubah urutan adalah sebagai berikut: Semua bot bergerak; semua bot melakukan tindakan; kemudian aturan lingkungan terjadi. Jika Anda menuangkan air ke tanah, air akan menjadi basah ( W) untuk satu putaran. Api tidak akan menyebar ke tanah basah. Jika Anda menuangkan air di tanah basah, air akan terus basah. Jika Anda menuangkan air ke api, itu kembali ke tanah biasa. Anda tidak dapat melakukan apa pun untuk abu.

Putaran dijalankan dengan 4 bot sekaligus. Putaran berakhir setelah 50 putaran, atau ketika satu bot kehabisan tanah yang tidak terbakar, mana yang lebih dulu. Skor Anda dihitung sebagai jumlah sel tanah atau basah di kotak 9x9 yang berpusat di tempat bot Anda dimulai.

Berikut adalah contoh bot; mengambil ketiga huruf secara acak dan umumnya berakhir membakar bidangnya sendiri.

RandomBurner:

#!/usr/bin/env python
import random
print random.choice('LRUDS')+random.choice('BPX')+random.choice('LRUDS')

Aturan:

• Tidak ada akses sistem file di luar folder Anda sendiri.
• Anda dapat menulis ke file jika Anda perlu menyimpan data yang persisten di antara belokan, tetapi hanya maksimal 1 kb per bot
• Anda tidak boleh menimpa bot orang lain
• Jika Anda menghasilkan gerakan yang tidak valid, bot Anda akan duduk diam. Jika Anda menghasilkan tindakan yang tidak valid, bot Anda tidak akan melakukan apa pun.
• Harap tetap menggunakan bahasa umum yang dapat dijalankan pada kotak OSX atau Linux.

Kode pengontrol dapat ditemukan di sini.

Hasil awal:

Average of 15 rounds:
---------------------
81 Farmer
56 CautiousBot
42 GetOff
41 Visigoth
40 DontBurnMeBro
37 FireFighter
35 Pyro
11 Protector

Pembaruan : Menambahkan Petani, CautiousBot, GetOff, FireFighter, dan Pyro.

orang biadab

Visigoth mencoba membakar musuh-musuhnya ke tanah. Ia berharap untuk melakukan ini sebelum orang lain sampai ke tanahnya.

Menjalankan: python visigoth.py

#!/usr/bin/python

''' Charge the enemy and burn them to the ground. '''

import sys

data = sys.stdin.readlines()

startx, starty, x, y = [int(i) for i in data[0:4]]
field = [list(i) for i in data[4:]]

otherbots = []
for i in range(32):
    for j in range(32):
        if field[i][j]=='@': #bot
            if i!=y and j!=x:
                otherbots.append([j,i])

min_bot = otherbots[0]
for bot in otherbots:
    if abs(bot[0]-x)+abs(bot[1]-y) < abs(min_bot[0]-x)+abs(min_bot[1]-y):
        min_bot = bot

dx = min_bot[0]-x
dy = min_bot[1]-y

if abs(dy)>abs(dx):
    if dy>0:
        move = 'U'
    else:
        move = 'D'
else:
    if dx>0:
        move = 'R'
    elif dx<0:
        move = 'L'
    else:
        move = 'S'

if max(abs(x-startx), abs(y-starty))>4:
    if 0<x<31 and 0<y<31:
        dirs = {'U':(-1,0), 'D':(1,0), 'L':(0,-1), 'R':(0,1)}
        for i in dirs:
            if field[dirs[i][0]][dirs[i][1]] in ('.', 'W'):
                action = 'B'+i
                break
        else:
            # No free land nearby, go out in a blaze of glory
            action = 'BS'
    else:
        action = 'BS'
else:
    # Don't set own field on fire
    action = 'XS'

print move+action

Ini adalah entri pertama saya, kritik konstruktif dihargai!

Jawa, Pelindung

Berusaha mengelilingi ladangnya dengan pagar abu.

Sunting: Logika sedikit ditingkatkan. Mungkin tidak akan membuat perbedaan.

import java.awt.Point;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.Scanner;

/**
 * Created 10/6/15
 *
 * @author TheNumberOne
 */
public class Protecter {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        Point start = new Point(in.nextInt(), in.nextInt());
        Point current = new Point(in.nextInt(), in.nextInt());
        in.nextLine();
        String output = "";
        char[][] board = new char[32][];
        for (int i = 0; i < 32; i++){
            board[i] = in.nextLine().toCharArray();
        }
        List<Point> danger = new ArrayList<>();
        List<Point> close = new ArrayList<>();
        List<Point> closeDanger = new ArrayList<>();
        List<Point> fence = new ArrayList<>();
        for (int i = 0; i < 32; i++){
            for (int j = 0; j < 32; j++){
                Point p = new Point(i, j);
                char c = board[j][i];
                if (Math.abs(p.x - start.x) < 10 && Math.abs(p.y - start.y) < 10){
                    if ((c + "").matches("\\d")){
                        danger.add(p);
                    }
                }
                if (distance(current, p) == 1){
                    close.add(p);
                }
                if ((Math.abs(p.x - start.x) == 10 || Math.abs(p.y - start.y) == 10) && !(c + "").matches("#|\\d|@")){
                    fence.add(p);
                }
            }
        }
        closeDanger = new ArrayList<>(danger);
        closeDanger.retainAll(close);
        danger.sort(Comparator.comparingInt(a -> distance(current, a) / (board[a.y][a.x] - '0')));
        if (danger.size() > 0){
            output += moveTo(current, danger.get(0));
        } else {
            fence.sort(Comparator.comparingInt(a -> distance(current, a)));
            if (fence.size() == 0){
                output += "S";
            } else {
                output += moveTo(current, fence.get(0));
            }
        }
        closeDanger.sort(Comparator.comparingInt(a -> board[a.y][a.x] - '0'));
        if (closeDanger.size() > 0){
            output += "P";
            output += moveTo(current, closeDanger.get(0));
        } else {
            if (danger.size() == 0) {
                List<Point> closeFence = new ArrayList<>(fence);
                closeFence.retainAll(close);
                if (closeFence.size() > 0) {
                    output += "B";
                    output += moveTo(current, closeFence.get(0));
                } else {
                    if (!fence.contains(current)){
                        output += "PS";
                    } else {
                        output += "BS";
                    }
                }
            } else {
                if (!fence.contains(current)){
                    output += "PS";
                } else {
                    output += "BS";
                }
            }
        }
        System.out.println(output);
    }

    private static String moveTo(Point from, Point to) {
        if (from.x > to.x){
            return "L";
        }
        if (from.x < to.x){
            return "R";
        }
        if (from.y > to.y){
            return "U";
        }
        if (from.y < to.y){
            return "D";
        }
        return "S";
    }

    private static int distance(Point p1, Point p2){
        return Math.abs(p1.x - p2.x) + Math.abs(p2.y - p1.y);
    }

}

Tempatkan dalam file bernama Protector.java.

Kompilasi dengan: javac Protector.java
Jalankan dengan:java Protector

GetOff, Python

GetOff hanya ingin menjaga tanahnya untuk dirinya sendiri, dan dia tidak takut untuk mengejar bot sialan itu di seluruh tanahnya, menyemprotkan mereka dengan pistol air sampai mereka pergi. Meskipun propertinya tidak dilanggar, ia berusaha sebaik mungkin untuk memastikan tanahnya tidak terbakar.

#!/usr/bin/env python

import sys

fire = ['1','2','3','4','5','6']

move = ''
ad = ''

data = sys.stdin.readlines()

startx, starty, x, y = [int(i) for i in data[0:4]]
board = [list(i) for i in data[4:]]

top = starty-4
bottom = starty+5
right = startx+5
left = startx-4

bots = []
for i in range(32):
    for j in range(32):
        if board[i][j]=='@':
            if i != y and j != x:
                bots.append([j,i])

fires = []
for i in range(32):
    for j in range(32):
        if board[i][j] in fire: #fire
            fires.append([j,i])

for bot in bots:
    if left < bot[0] < right and top < bot[1] < bottom: # if there's a bot in the field
        if bot[0] > x:
            move = 'R'
        elif bot[0] < x:
            move = 'L'
        elif bot[1] > y:
            move = 'D'
        elif bot[1] < y:
            move = 'U'
        else:
            move = 'S'
    else:
        nearest_fire = []
        for f in fires:
            if left < f[0] < right and top < f[1] < bottom:
                if nearest_fire == []:
                    nearest_fire = f
                elif (f[0]-x)+(f[1]-y) < (nearest_fire[0]-x)+(nearest_fire[1]-y):
                    nearest_fire = f
        if nearest_fire == []:
            move = 'S'
        else:
            if nearest_fire[0] > x:
                move = 'R'
            elif nearest_fire[0] < x:
                move = 'L'
            elif nearest_fire[1] > y:
                move = 'D'
            elif nearest_fire[1] < y:
                move = 'U'
            else:
                move = 'S'

if board[x-1][y] in fire: # position immediately to the left
    ad = 'L'
elif board[x+1][y] in fire: # position immediately to the right
    ad = 'R'
elif board[x][y-1] in fire: # position immediately up
    ad = 'U'
elif board[x][y+1] in fire: # position immediately down
    ad = 'D'
else:
    ad = 'S'

print(move+'P'+ad)

Petani, Jawa

Petani hanya peduli dengan hasil panennya. Dia terus mengawasi ladangnya untuk kemungkinan kebakaran atau penyerbu.

import java.awt.Point;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.Scanner;

public class Farmer {

    public static void main(String[] args) {
        //row == y
        //col == x
        Scanner in = new Scanner(System.in);
        Point start = new Point(in.nextInt(), in.nextInt());
        Point current = new Point(in.nextInt(), in.nextInt());
        in.nextLine();
        char[][] board = new char[32][];
        for (int row = 0; row < 32; row++){
            board[row] = in.nextLine().toCharArray();
        }
        final List<Point> firesInField = new ArrayList<>();
        final List<Point> enemiesInField = new ArrayList<>();
        for (int row = 0; row < 32; row++) {
            for (int col = 0; col < 32; col++) {
                Point p = new Point(col, row);
                if (!isInField(start, p))
                    continue;
                char c = board[row][col];
                if (isFire(c)) {
                    firesInField.add(p);
                } else if (c == '@' && col != current.x && row != current.y) {
                    enemiesInField.add(p);
                } 
            }
        }
        List<Point> destinations = firesInField.size() > 0 ? firesInField : enemiesInField;

        if (destinations.size() > 0) {
            //take short paths to eliminate more fires
            destinations.sort(Comparator
                    .comparingInt((Point p) -> distance(p, current))
                    .thenComparingInt(p -> -1 * (board[p.y][p.x] - '0')));
            Point dest = destinations.get(0);
            print(moveTo(current, dest), "P", moveTo(current, dest));
        }

        //TODO start fires if an enemy has more intact ground

        //walk back to center
        print(moveTo(current, start), "P", moveTo(current, start));
    }

    private static void print(String move, String action, String actionMove) {
        System.out.println(move + action + actionMove);
        System.exit(0);
    }

    private static boolean isInField(Point centerOfField, Point toTest) {
        //add one extra, to prevent fires that are very near
        return distance(centerOfField, toTest) <= 10 && Math.abs(centerOfField.x - toTest.x) <= 5 && Math.abs(centerOfField.y - toTest.y) <= 5;
    }

    private static boolean isFire(char c) {
        return c == '1' || c == '2' || c == '3' || c == '4' || c == '5' || c == '6';
    }

    private static String moveTo(Point from, Point to) {
        if (from.x > to.x){
            from.x--;
            return "L";
        }
        if (from.x < to.x){
            from.x++;
            return "R";
        }
        if (from.y > to.y){
            from.y--;
            return "U";
        }
        if (from.y < to.y){
            from.y++;
            return "D";
        }
        return "S";
    }

    private static int distance(Point p1, Point p2){
        return Math.abs(p1.x - p2.x) + Math.abs(p2.y - p1.y);
    }
}

Pyro, python

Pyro suka api. Pyro mencintai api. Pyro hidup dalam api. Saya sedang berpikir "Pyro from TF2". Pyro suka membakar barang. Dia tidak akan membakar wilayahnya sendiri, tetapi dia akan mencoba untuk keluar dari sana, menggunakan algoritma "pathfinding" sederhana.

import sys
import random
inpu          = sys.stdin.readlines()
ox,oy,x,y     = [int(i) for i in inpu[0:4]]
board         = [list(i) for i in inpu[4:]]
adjacentcells = [[[board[y+b][x+c],b,c] for b in range(-1,2)] for c in range(-1,2)]
action        = ""
infield=max(abs(ox-x),abs(oy-y))<=9
# let's find out what Pyro will do!
if not infield: # Pyro won't burn what's in his field.
    for row in adjacentcells:
        for entry in row:
            cell,a,b=entry
            if(a!=b):   # Can't act on these cells.
                if cell==".":   # burn it!!!!!!
                    action = "B"
                    if(a==0):
                        direction = {-1:"L",1:"R"}[b]
                    else:
                        direction = {-1:"D",1:"U"}[a]
            if action: break;
        if action: break;
    # Pyro doesn't care where he goes, so long as
    # Pyro's not in the field of Pyro.
    move = random.choice("LRUDS")
else:   # Thought Pyro hates water, Pyro must protect SOMETHING.
    action    = "P"
    direction = "S"
    # get the direction towards the center
    # Pyro will move away from ox and oy to
    # towards the center, if in the field.
    # Pyro will do this by first going right/left,
    # then going up/down. (This behaviour is
    # removed when he leaves his field.)
    cx = cy = 16
    while max(abs(cx-x),abs(cy-y))<=9:
        cx = random.randint(0,31)
        cy = random.randint(0,31)
    if(cx-x>0): #is to the left of the center
        move = "R"
    elif(cx-x<0): #is to the right of the cenetr
        move = "L"
    elif(cy-y>0): # is above center
        move = "D"
    elif(cy-y<0): # is below center
        move = "U"
    else:   # is at center (something went wrong!)
        move   = "S"
        action = "B"
if not move:
    move = "S"
if not action:
    action = "B"
if not direction:
    direction = "S"
print(move+action+direction)


""" Here, have a face!
MMMMMMMMMMMMMMMMMMMMMMMdyo/:-.````.:+sdMMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMMMMNs/....----...``````.omMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMMh/``..-://+//:-..````````/mMMMMMMMMMMM
MMMMMMMMMMMMMMMm:````..-:////:--..``````````sMMMMMMMMMM
MMMMMMMMMMMMMMs```````....--....`````````````/NMMMMMMMM
MMMMMMMMMMMMM/````````````````````````````````:NMMMMMMM
MMMMMMMMMMMM/```......``````````````````.......+mMMMMMM
MMMMMMMMMMMo.:::::::::::-````````````.-:::::::::/+yNMMM
MMMMMMMMMNs:-..-------::::.`````````://:-------..-:/hMM
MMMMMMMMm+:..---:::::---:::.```````::::---:::::--.`-/sM
MMMMMMMN+:`.---:::/:/:---:::``````.:::.--:::/:/:--.`:/h
MMMMMMMh:-`---://o+///:---::.`````-::---://oo///:--..:+
MMMMMMMs:..--:/+/sss+//:-.::.`````-::.-://+osyo//:-.-::
MMMMMMMs:----///+sosso/:--::``````.::.-://+oosso+:-.::/
MMMMMMMd:::-:/++/osyso+/--::```````::-://+/osyso+/--::s
MMMMMMMMs:/::::+ooos+o+/:::.```````.::::/+ooos/o+/:/:+N
MMMMMMMMMs://:+osooo+o+/::.``.....``.:/:/osoos+o+//:+mM
MMMMMMMMMM--:/++ysyoo+/:-...........`.-:/+ssso++/:-yNMM
MMMMMMMMMMs``.-:://::-..`.....---....``..--::::-.`.MMMM
MNNMddhyys+-.```````````...--:::::-...````````````+MMMM
////.-:///:-..``````````.:///++o/o+/:/.```````````yMMMM
---.`.-:::--..`````````..+//+ooo+++///.```````````mMMMM
/.--``..--...``````````..--:/+oo+/:--..``````````.MMMMM
s --.```...````````````...--/+++++/-...````````.`/MMMMM
d .--```````````````````...-::::::-...````````.-/+MMMMM
M.`--`  ````````````````....------....````````.-/.dMMMM
M+ .-.  `````````````````.:::::::::::.`````````.-sMMMMM
Mm``--`  ``````````````-://///////////:-````````/MMMMMM
MM: --.  ````````````.://::--......-::///-``````yMMMMMM
MMd`.-.  ``````````.:/::-..-:::::::.``-::::.````NMMMMMM
MMM+.--`  `````````:::-.-::-.......-::-`--::```+MMMMMMM
MMMN---`  ````````.--..:-.```````````..-`.--.``dMMMMMMM
MMMMd--.` `````..`.-.`-````````````````.-`...`/MMMMMMMM
MMMMMNh+ss/oydNMd``.`.`````````````````````.`.NMMMMMMMM
MMMMMMMMMMMMMMMMMd.``.```````````````````````dMMMMMMMMM
MMMMMMMMMMMMMMMMMMm:```````````````````````-dMMMMMMMMMM
MMMMMMMMMMMMMMMMMMMMy.```````````````````.oNMMMMMMMMMMM
MMMMMMMMMMMMMMMMMMMMMNs-```````````````:sNMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMMMMMMMMMmy+:-.````.:+ymMMMMMMMMMMMMMMMM
"""

DontBurnMeBro

Entri Python lain. Dijamin bukan menjadi yang pertama mati (saya pikir).

#!/usr/bin/python

print "SPS"

Pemadam Kebakaran, Jawa

Melawan semua kebakaran.

import java.awt.Point;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.Scanner;

/**
 * Created 10/7/15
 *
 * @author TheNumberOne
 */
public class FireFighter {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        Point start = new Point(in.nextInt(), in.nextInt());
        Point current = new Point(in.nextInt(), in.nextInt());
        in.nextLine();
        String output = "";
        char[][] board = new char[32][];
        for (int i = 0; i < 32; i++) {
            board[i] = in.nextLine().toCharArray();
        }

        List<Point> danger = new ArrayList<>();
        List<Point> close = new ArrayList<>();
        List<Point> closeDanger;
        for (int i = 0; i < 32; i++){
            for (int j = 0; j < 32; j++){
                Point p = new Point(i, j);
                char c = board[j][i];
                if ((c + "").matches("\\d")){
                    danger.add(p);
                }
                if (distance(current, p) == 1){
                    close.add(p);
                }
            }
        }
        closeDanger = new ArrayList<>(danger);
        closeDanger.retainAll(close);

        Comparator<Point> comparator = Comparator.comparingInt((Point a) -> board[a.y][a.x]).reversed();

        danger.sort(comparator);
        danger.sort(Comparator.comparingInt(a -> distance(start, a)));
        if (danger.size() > 0){
            output += moveTo(current, danger.get(0));
        } else {
            output += moveTo(current, start);
        }
        closeDanger.sort(comparator);
        if (closeDanger.size() > 0){
            output += "P" + moveTo(current, closeDanger.get(0));
        } else {
            output += "PS";
        }
        System.out.println(output);
    }

    private static String moveTo(Point from, Point to) {
        if (from.x > to.x){
            return "L";
        }
        if (from.x < to.x){
            return "R";
        }
        if (from.y > to.y){
            return "U";
        }
        if (from.y < to.y){
            return "D";
        }
        return "S";
    }

    private static int distance(Point p1, Point p2){
        return Math.abs(p1.x - p2.x) + Math.abs(p2.y - p1.y);
    }

}

Penjaga, Python 2

import sys

Out = ["S", "P", "S"]

StX = int(sys.stdin.readline()) - 1
StY = int(sys.stdin.readline()) - 1
NowX = int(sys.stdin.readline()) - 1
NowY = int(sys.stdin.readline()) - 1
Map = []
for i in range(32):
    Map.append(sys.stdin.readline())

Pos = [NowX, NowY]
Area = [[StX, StY]]
for x in range(StX-4, StX+4):
    for y in range(StY-4, StY+4):
        Area.append([x, y])

Fires = []
for y in range(32):
    for x in range(32):
        if Map[y][x] in "123456":
            Fires.append([x, y])

Danger = []
for Tile in Area:
    if Map[Tile[1]][Tile[0]] in "123456":
        Danger.append(Tile)

Distance = {}
i = -1
for Fire in Danger:
    i += 1
    Distance[(Pos[0] - Fire[0], Pos[1] - Fire[1])] = i

i = min(Distance)
Closest = Danger[Distance[i]]

if Closest[0] > Pos[0]:
    Out[0] = Out[2] = "R"
    Pos[0] += 1
if Closest[0] < Pos[0]:
    Out[0] = Out[2] = "L"
    Pos[0] -= 1
if Closest[0] == Pos[0]:
    if Closest[1] > Pos[1]:
        Out[0] = Out[2] = "D"
        Pos[1] += 1
    if Closest[1] < Pos[1]:
        Out[0] = Out[2] = "U"
        Pos[1] -= 1

if Closest[0] + 1 == Pos[0] and Closest[1] == Pos[1]:
    Out[2] = "L"
if Closest[0] - 1 == Pos[0] and Closest[1] == Pos[1]:
    Out[2] = "R"
if Closest[1] + 1 == Pos[1] and Closest[0] == Pos[0]:
    Out[2] = "U"
if Closest[1] - 1 == Pos[1] and Closest[0] == Pos[0]:
    Out[2] = "D"
if Closest[0] == Pos[0] and Closest[1] == Pos[1]:
    Out[2] = "S"


print "".join(Out)

Bisa disederhanakan, tapi saya lelah.

Penjaga berusaha menjaga medan dari bahaya. Jika api muncul, ia bergegas ke sana dan memadamkannya secepat mungkin.

Saya dapat menambahkan akomodasi untuk kebakaran yang masuk juga.

CautiousBot, Node.js (ES5)

Bot ini keluar dan mencoba untuk membakar tanah bot lain. Itu bahkan duduk di atas api selama 3 kutu untuk menyembunyikannya! Namun, seseorang tidak pernah bisa terlalu berhati-hati, jadi selalu pastikan itu cukup dekat untuk memadamkan api di tanahnya sendiri.

Catatan:

• Menggunakan file status yang disebut state.jsondisimpan dalam direktori kerjanya, digunakan untuk menyimpan informasi tentang posisi awal bot lain dan untuk menentukan berapa lama untuk menyembunyikan api yang dimulai. Ini harus dihapus setelah putaran selesai (misalnya, ketika beberapa bot telah menang). Kalau tidak, bot akan bingung pada putaran berikutnya. (Beri tahu saya jika ini melanggar aturan.)
• Membutuhkan splitmodul.

#!/usr/bin/env node

// imports
var fs       = require("fs");
var splitmod = require("split");

// variables
var startX, startY, currentX, currentY, board = [], state = {};
var DEBUG = false;

// utility functions
function debug(){
    if(DEBUG) console.log.apply(console, arguments);
}

// calculates manhattan distance which is also the number of turns it will take to get somewhere
function manhattan(x1, y1, x2, y2){
    return Math.abs(x2 - x1) + Math.abs(y2 - y1);
}

// calculates chebyshev distance (mostly used for determining if a bot is within someone's plot)
function chebyshev(x1, y1, x2, y2){
    return Math.max(Math.abs(x2 - x1), Math.abs(y2 - y1));
}

// gets the board character at x, y
function get(x, y){
    return board[y][x];
}

function readState(){
    try {
        state = JSON.parse(fs.readFileSync('state.json').toString());
        debug("Opened state file");
    } catch(e){
        // it must be the first turn
        createState();
    }
}

function writeState(){
    fs.writeFileSync('state.json', JSON.stringify(state));
    debug("Wrote state file");
}

// finds out where all the other bots are
function getBotPositions(){
    var positions = [];
    for(var x = 0; x < 32; x++){
        for(var y = 0; y < 32; y++){
            if(get(x, y) == '@' && x != currentX && y != currentY){
                positions.push({x: x, y: y});
            }
        }
    }
    return positions;
}

function createState(){
    debug("Creating state");
    // take a loot at where other bots are to record their land locations
    var botLands = getBotPositions();
    state['botLands'] = botLands;

    state['turn'] = 0; // which turn is it?
    state['lastFireTurn'] = -999; // which turn was the last one where this bot set a fire?
}


// finds whether a plot of land (defined by its center) has fire on it
function isLandBurning(x, y){
    for(var dx = -4; dx < 5; dx++){
        for(var dy = -4; dy < 5; dy++){
            if(get(x + dx, y + dy).match(/[1-6]/) != null) return true;
        }
    }
    return false;
}

// finds the fire with the highest number (and therefore the one to put out first)
function findFire(x, y){
    var highestNum = 0;
    var fire = {x: x, y: y};
    for(var dx = -4; dx < 5; dx++){
        for(var dy = -4; dy < 5; dy++){
            if(get(x + dx, y + dy).match(/[1-6]/) != null){
                var num = parseInt(get(x + dx, y + dy));
                if(num > highestNum){
                    highestNum = num;
                    fire = {x: x + dx, y: y + dy};
                }
            }
        }
    }
    return fire;
}

// figures out where to go to get somewhere
function getDirection(x1, y1, x2, y2){
    var direction = 'S';
    var cycx = Math.abs(y2 - y1) / Math.abs(x2 - x1);

    if(cycx < 1){
        if(x2 > x1) direction = 'R';
        if(x2 < x1) direction = 'L';
    } else {
        if(y2 > y1) direction = 'D';
        if(y2 < y1) direction = 'U';
    }

    debug("Getting direction", x1, y1, x2, y2, "result", direction);

    return direction;
}

// read input
var dataCycle = 0;
process.stdin.pipe(splitmod()).on('data', function(line){
    switch(dataCycle){
    case 0:
        startX = parseInt(line);
        break;
    case 1:
        startY = parseInt(line);
        break;
    case 2:
        currentX = parseInt(line);
        break;
    case 3:
        currentY = parseInt(line);
        break;
    default:
        board.push(line);
    }

    dataCycle++;
}).on('end', function(){
    // main bot code
    readState();
    state['turn']++;
    debug("It is turn", state['turn']);

    // get bot positions
    var botPositions = getBotPositions();

    var action = {type:'X', direction:'S'};
    var move   = 'S';

    var isMyLandBurning = isLandBurning(startX, startY);
    if(isMyLandBurning){ // hurry over there ASAP!
        debug("Bot land is burning!");
        var pos = findFire(startX, startY);
        debug("Fire found at", pos);
        move = getDirection(currentX, currentY, pos.x, pos.y);
        // simulate the move and figure out if/where to dump the water
        var newX = currentX + (move == 'R') - (move == 'L');
        var newY = currentY + (move == 'D') - (move == 'U');
        if(chebyshev(newX, newY, pos.x, pos.y) < 5){
            // on its own land, start dropping water like a madman
            debug("Dropping water");
            action.type = 'P';

            // if it can put out the target fire, then do that
            if(manhattan(newX, newY, pos.x, pos.y) == 1) action.direction = getDirection(newX, newY, pos.x, pos.y);
            // it's not in range of the target fire, so use the time to put out other fires
            // if it's moving on top of a fire, put that out
            else if(get(newX, newY).match(/[1-6]/) != null) action.direction = 'S';
            // if there's a fire around it then put that out
            else if(get(newX + 1, newY).match(/[1-6]/) != null) action.direction = 'R';
            else if(get(newX - 1, newY).match(/[1-6]/) != null) action.direction = 'L';
            else if(get(newX, newY + 1).match(/[1-6]/) != null) action.direction = 'D';
            else if(get(newX, newY - 1).match(/[1-6]/) != null) action.direction = 'U';
            else action.direction = 'S';
        }
    } else {
        // are there any bots that could start a fire when this bot is 6+ tiles away?
        var headBack = false;
        for(var i = 0; i < botPositions.length; i++){
            var otherBot = botPositions[i];
            var dist = manhattan(otherBot.x, otherBot.y, startX, startY) - 4;
            var myDist = manhattan(currentX, currentY, startX, startY);
            if(dist + 6 < myDist){
                headBack = true;
                break;
            }
        }
        if(headBack){ // they're probably up to no good
            debug("Bots are dangerously close, heading back");
            move = getDirection(currentX, currentY, startX, startY);
        } else if(state['turn'] - state['lastFireTurn'] < 3) { // no bots near own plot, time to consider other options
            debug("Hiding fire");
            // sneakily hide the fire if one was set :)
        } else { // last option is to go find land to burn
            debug("Finding land to burn");
            var closestX = 999, closestY = 999;
            for(var i = 0; i < state.botLands.length; i++){
                var otherLand = state.botLands[i];
                if(!isLandBurning(otherLand.x, otherLand.y) && chebyshev(currentX, currentY, otherLand.x, otherLand.y) > 4){ // find someone to burn
                    // use [-3, 3] here because on the first turn, the bots could have moved before this bot had a chance to see them
                    // meaning that the [-3, 3] region is the only one that is guaranteed to be on their land
                    for(var dx = -3; dx < 4; dx++){
                        for(var dy = -3; dy < 4; dy++){
                            var type = get(otherLand.x + dx, otherLand.y + dy);
                            var distThere = manhattan(currentX, currentY, otherLand.x + dx, otherLand.y + dy);
                            var distShortest = manhattan(currentX, currentY, closestX, closestY);
                            // find normal land, or wet land that will dry by the time the bot gets to it
                            if((type == '.' || type == '@' || (type == 'W' && distThere > 1)) && distThere < distShortest){
                                closestX = otherLand.x + dx;
                                closestY = otherLand.y + dy;
                            }
                        }
                    }
                }
            }
            if(closestX != 999 && closestY != 999){ // land found; go there
                debug("Target acquired", closestX, closestY);
                debug("Burning land");
                move = getDirection(currentX, currentY, closestX, closestY);
                if(move == 'S'){ // is it on the land? If so, then burn it
                    action.type = 'B';
                    action.direction = 'S';
                    state['lastFireTurn'] = state['turn']; // record when the fire was set
                }
            } else { // everyone else's land already has a fire
                debug("Default action");
                // default to heading back; one can never be too safe!
                move = getDirection(currentX, currentY, startX, startY);
            }
        }
    }

    // save the state file
    writeState();
    // output the action
    console.log(move + action.type + action.direction);
});