# https://zh.wikipedia.org/zh-hans/%E8%A7%A3%E8%BF%B7%E5%AE%AE%E6%BC%94%E7%AE%97%E6%B3%95
from pwn import *
import random
import time

context.log_level = 'debug'
map = [[0 for _ in range(19)] for _ in range(19)]
start = [9,9]
position = start
for i in range(19):
    map[0][i] = 9
    map[18][i] = 9
    map[i][0] = 9
    map[i][18] = 9


r = remote('localhost',10001)


r.recvline()
r.recvline()

# 11*11的迷宫
            
def gen_moves(map:list, position:list)->str:
    moves = ''
    
    if map[position[0]-1][position[1]] == 0:
        moves += "w"
    if map[position[0]+1][position[1]] == 0:
        moves += "s"
    if map[position[0]][position[1]-1] == 0:
        moves += "a"
    if map[position[0]][position[1]+1] == 0:
        moves += "d"
    return moves

while(1):
    
    moves = gen_moves(map, position)
    
    move = random.choice(moves).encode()
    r.sendline(move)
    status = r.recvline().decode()
    
    # 撞墙
    if 'wall' in status:
        if move == b'w':
            map[position[0]-1][position[1]] = 9
        if move == b's':
            map[position[0]+1][position[1]] = 9
        if move == b'a':
            map[position[0]][position[1]-1] = 9
        if move == b'd':
            map[position[0]][position[1]+1] = 9
    else:
        if move == b'w':
            position[0] -= 1
        if move == b's':
            position[0] += 1
        if move == b'a':
            position[1] -= 1
        if move == b'd':
            position[1] += 1