Es ist ein trockener Sommer in der Prärie. Die vier Bauern in der Region erkennen, dass sie den Markt für Mais durch Verbrennen der Ernte ihrer Nachbarn in die Enge treiben können. Dafür brauchen sie eine Strategie. Hier kommst du rein.

Deine Aufgabe ist es, einen Bot zu schreiben, der den Bauern sagt, was sie verbrennen sollen. Ziel ist es, das Spiel mit der größten Fläche an unverbranntem Land zu beenden. Das Spielfeld ist ein 32x32-Raster. Jede Zelle kann eine der folgenden sein:

. - Ground

@ - A bot

# - Ash

W - Wet ground

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

Die Intensität des Feuers nimmt mit jeder Runde um 1 zu. Sobald es 3 oder höher ist, werden Zellen daneben (horizontal oder vertikal) in Brand gesetzt. Nachdem das Feuer 6 getroffen hat, verwandelt es sich in Asche.

In jedem Spielzug erhalten Bots als STDIN Folgendes: Bots starten x, Bots starten y, Bots aktuelle x-Position, Bots aktuelle y-Position und das Brett, getrennt durch Zeilenumbrüche. Ein Beispiel:

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..........................
................................
................................
................................
................................
................................
................................

(in diesem Fall bist du der Bot unten links).

Sie müssen drei Zeichen mit einem optionalen Zeilenumbruch ausgeben, der Folgendes darstellt:

Move - einer von L, R, U, D, or S (stay)

Action - einer von B (burn), P (pour water) or X (do nothing)

Richtung - eine von L, R, U, D or S- steuert, für welche Zelle Sie die Aktion ausführen

Feuer beeinflusst keine Bots.

Die Zugreihenfolge ist wie folgt: Alle Bots bewegen sich; Alle Bots führen Aktionen aus. dann passieren umweltregeln. Wenn Sie Wasser auf den Boden gießen, ist es Weine Runde lang nass ( ). Feuer breitet sich nicht auf nassem Boden aus. Wenn Sie Wasser auf nassen Boden gießen, bleibt es weiterhin nass. Wenn Sie Wasser ins Feuer gießen, kehrt es zu normalem Boden zurück. Mit Asche kann man nichts anfangen.

Runden werden mit jeweils 4 Bots gespielt. Die Runde endet nach 50 Runden, oder wenn einem Bot der unverbrannte Boden ausgeht, je nachdem, was zuerst eintritt. Ihre Punktzahl wird berechnet als die Anzahl der gemahlenen oder nassen gemahlenen Zellen im 9x9-Quadrat, zentriert an der Stelle, an der Ihr Bot gestartet ist.

Hier ist ein Beispielbot; Es wählt alle drei Buchstaben nach dem Zufallsprinzip aus und brennt in der Regel seine eigenen Felder nieder.

RandomBurner:

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

Regeln:

• Kein Dateisystemzugriff außerhalb Ihres eigenen Ordners.
• Sie können in Dateien schreiben, wenn Sie dauerhafte Daten zwischen den Runden speichern müssen, jedoch nur bis zu maximal 1 KB pro Bot
• Sie dürfen den Bot eines anderen Benutzers nicht überschreiben
• Wenn Sie einen ungültigen Zug ausgeben, bleibt Ihr Bot stehen. Wenn Sie eine ungültige Aktion ausgeben, unternimmt Ihr Bot nichts.
• Bitte halten Sie sich an gebräuchliche Sprachen, die auf einer OSX- oder Linux-Box ausgeführt werden können.

Controller-Code finden Sie hier.

Erste Ergebnisse:

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

Update : Farmer, CautiousBot, GetOff, FireFighter und Pyro hinzugefügt.

Westgoten

Westgoten versuchen, ihre Feinde niederzubrennen. Es hofft, dies zu tun, bevor jemand anderes in sein Land gelangt.

Lauf: 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

Dies ist mein erster Eintrag, konstruktive Kritik wird geschätzt!

Java, Beschützer

Versuche, sein Feld mit einem Aschenzaun zu umgeben.

Edit: Die Logik wurde ein wenig verbessert. Macht wahrscheinlich keinen Unterschied.

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);
    }

}

In eine Datei mit dem Namen platzieren Protector.java.

Kompilieren mit: javac Protector.java
Ausführen mit:java Protector

GetOff, Python

GetOff will nur sein Land für sich behalten, und er hat keine Angst, diese verdammten Bots überall auf seinem Land zu jagen und sie mit seiner Wasserpistole zu bespritzen, bis sie gehen. Während sein Eigentum nicht verletzt wird, versucht es sein Bestes, um sicherzustellen, dass sein Land nicht verbrannt wird.

#!/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)

Bauer, Java

Der Bauer kümmert sich nur um seine Ernte. Er beobachtet ständig sein Feld auf mögliche Brände oder Eindringlinge.

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 mag Feuer. Pyro liebt Feuer. Pyro lebt im Feuer. Ich denke "Pyro von TF2". Pyro verbrennt gern Dinge. Er wird sein eigenes Territorium nicht verbrennen, aber er wird versuchen, es mithilfe eines einfachen "Pfadfindungs" -Algorithmus zu verlassen.

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

Ein weiterer Python-Eintrag. Garantiert nicht der Erste zu sein, der stirbt (glaube ich).

#!/usr/bin/python

print "SPS"

Feuerwehrmann, Java

Bekämpft alle Brände.

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);
    }

}

Bewahrer, 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)

Könnte vereinfacht werden, aber ich bin müde.

Der Bewahrer versucht, sein Feld vor Schaden zu bewahren. Wenn ein Feuer auftaucht, eilt es dorthin und löscht es so schnell es geht.

Ich kann auch Unterkünfte für ankommende Brände hinzufügen.

CautiousBot, Node.js (ES5)

Dieser Bot geht aus und versucht, das Land anderer Bots in Brand zu stecken. Es sitzt sogar 3 Zecken über dem Feuer, um es zu verstecken! Man kann jedoch nie zu vorsichtig sein, deshalb stellt man immer sicher, dass es nah genug ist, um Brände auf seinem eigenen Land zu löschen.

Anmerkungen:

• Verwendet eine Statusdatei, state.jsondie in ihrem Arbeitsverzeichnis gespeichert ist und Informationen über die Ausgangspositionen anderer Bots speichert und festlegt, wie lange ein ausgelöstes Feuer verborgen werden soll. Dies muss gelöscht werden, sobald die Runde vorbei ist (zB wenn ein Bot gewonnen hat). Andernfalls wird der Bot in der nächsten Runde verwirrt. (Lassen Sie mich wissen, wenn dies gegen die Regeln verstößt.)
• Benötigt das 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);
});