結果

問題 No.5006 Hidden Maze
ユーザー titan23titan23
提出日時 2022-06-12 15:40:18
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 477 ms / 2,000 ms
コード長 5,391 bytes
コンパイル時間 254 ms
実行使用メモリ 103,384 KB
スコア 470
平均クエリ数 991.50
最終ジャッジ日時 2022-06-12 15:41:14
合計ジャッジ時間 48,073 ms
ジャッジサーバーID
（参考情報） 		judge16 / judge15
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 424 ms
102,684 KB
testcase_01 AC 450 ms
102,120 KB
testcase_02 AC 421 ms
102,300 KB
testcase_03 AC 404 ms
100,864 KB
testcase_04 AC 389 ms
101,204 KB
testcase_05 AC 436 ms
101,804 KB
testcase_06 AC 451 ms
101,736 KB
testcase_07 AC 435 ms
101,828 KB
testcase_08 AC 379 ms
101,964 KB
testcase_09 AC 393 ms
101,588 KB
testcase_10 AC 460 ms
100,756 KB
testcase_11 AC 427 ms
103,352 KB
testcase_12 AC 435 ms
102,796 KB
testcase_13 AC 429 ms
103,192 KB
testcase_14 AC 449 ms
102,072 KB
testcase_15 AC 418 ms
102,424 KB
testcase_16 AC 428 ms
100,944 KB
testcase_17 AC 437 ms
102,176 KB
testcase_18 AC 381 ms
101,776 KB
testcase_19 AC 428 ms
102,076 KB
testcase_20 AC 448 ms
101,424 KB
testcase_21 AC 416 ms
101,192 KB
testcase_22 AC 405 ms
101,200 KB
testcase_23 AC 428 ms
102,104 KB
testcase_24 AC 437 ms
100,900 KB
testcase_25 AC 449 ms
101,668 KB
testcase_26 AC 306 ms
100,576 KB
testcase_27 AC 426 ms
101,380 KB
testcase_28 AC 391 ms
101,720 KB
testcase_29 AC 411 ms
101,216 KB
testcase_30 AC 452 ms
101,340 KB
testcase_31 AC 432 ms
102,628 KB
testcase_32 AC 400 ms
100,848 KB
testcase_33 AC 382 ms
102,460 KB
testcase_34 AC 408 ms
102,216 KB
testcase_35 AC 435 ms
103,384 KB
testcase_36 AC 433 ms
101,640 KB
testcase_37 AC 375 ms
102,420 KB
testcase_38 AC 434 ms
101,380 KB
testcase_39 AC 389 ms
101,756 KB
testcase_40 AC 477 ms
101,996 KB
testcase_41 AC 429 ms
102,028 KB
testcase_42 AC 439 ms
102,580 KB
testcase_43 AC 436 ms
101,960 KB
testcase_44 AC 443 ms
102,104 KB
testcase_45 AC 424 ms
101,372 KB
testcase_46 AC 384 ms
101,756 KB
testcase_47 AC 436 ms
101,068 KB
testcase_48 AC 437 ms
101,372 KB
testcase_49 AC 372 ms
101,120 KB
testcase_50 AC 406 ms
101,020 KB
testcase_51 AC 420 ms
100,960 KB
testcase_52 AC 460 ms
102,528 KB
testcase_53 AC 448 ms
101,532 KB
testcase_54 AC 397 ms
101,740 KB
testcase_55 AC 425 ms
101,820 KB
testcase_56 AC 433 ms
102,072 KB
testcase_57 AC 426 ms
101,540 KB
testcase_58 AC 392 ms
100,928 KB
testcase_59 AC 379 ms
101,528 KB
testcase_60 AC 425 ms
102,560 KB
testcase_61 AC 395 ms
101,656 KB
testcase_62 AC 445 ms
101,576 KB
testcase_63 AC 429 ms
103,284 KB
testcase_64 AC 420 ms
102,008 KB
testcase_65 AC 418 ms
101,500 KB
testcase_66 AC 469 ms
101,556 KB
testcase_67 AC 378 ms
101,608 KB
testcase_68 AC 395 ms
101,336 KB
testcase_69 AC 428 ms
101,444 KB
testcase_70 AC 464 ms
101,516 KB
testcase_71 AC 452 ms
101,428 KB
testcase_72 AC 443 ms
101,808 KB
testcase_73 AC 437 ms
102,508 KB
testcase_74 AC 464 ms
102,064 KB
testcase_75 AC 392 ms
101,632 KB
testcase_76 AC 391 ms
101,164 KB
testcase_77 AC 413 ms
101,272 KB
testcase_78 AC 412 ms
101,312 KB
testcase_79 AC 380 ms
101,824 KB
testcase_80 AC 424 ms
102,388 KB
testcase_81 AC 432 ms
100,508 KB
testcase_82 AC 454 ms
102,456 KB
testcase_83 AC 457 ms
102,632 KB
testcase_84 AC 424 ms
102,372 KB
testcase_85 AC 418 ms
100,632 KB
testcase_86 AC 432 ms
102,628 KB
testcase_87 AC 439 ms
101,440 KB
testcase_88 AC 394 ms
102,116 KB
testcase_89 AC 435 ms
102,020 KB
testcase_90 AC 419 ms
100,848 KB
testcase_91 AC 444 ms
102,028 KB
testcase_92 AC 423 ms
101,312 KB
testcase_93 AC 444 ms
101,952 KB
testcase_94 AC 448 ms
100,892 KB
testcase_95 AC 429 ms
101,632 KB
testcase_96 AC 450 ms
102,816 KB
testcase_97 AC 434 ms
100,960 KB
testcase_98 AC 390 ms
101,708 KB
testcase_99 AC 407 ms
101,504 KB
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ソースコード

diff # 

import sys
import math
from bisect import bisect_right, bisect_left
from itertools import *
from collections import *
from heapq import heapify, heappush, heappop
inf = float('inf')
# mod = 1000000007
# mod = 998244353
input = lambda: sys.stdin.readline().rstrip()
def error(*args, sep=' ', end='\n'):
  print(*args, sep=sep, end=end, file=sys.stderr)
# sys.setrecursionlimit(10**6)
import random

random.seed = 148


##################

def can_move(x, y, d):
  if d == 'U':
    if y and v[y-1][x] == 0:
      return 1
  elif d == 'D':
    if y < 19 and v[y][x] == 0:
      return 1
  elif d == 'L':
    if x and h[y][x-1] == 0:
      return 1
  elif d == 'R':
    if x < 19 and h[y][x] == 0:
      return 1
  return 0

def cannot_move(x, y, d):
  if d == 'U':
    if y and v[y-1][x] == 1:
      return 1
  elif d == 'D':
    if y < 19 and v[y][x] == 1:
      return 1
  elif d == 'L':
    if x and h[y][x-1] == 1:
      return 1
  elif d == 'R':
    if x < 19 and h[y][x] == 1:
      return 1
  return 0

def change_yx(y, x, d):
  if d == 'U': y -= 1
  if d == 'D': y += 1
  if d == 'L': x -= 1
  if d == 'R': x += 1
  return (y, x)

def wall_nasi(res):
  dq = deque(res)
  nowy, nowx = 0, 0
  while dq:
    d = dq.popleft()
    move(nowx, nowy, d)
    nowy, nowx = change_yx(nowy, nowx, d)

def move(x, y, d):
  if d == 'U':
    v[y-1][x] = 0
  if d == 'D':
    v[y][x] = 0
  if d == 'L':
    h[y][x-1] = 0
  if d == 'R':
    h[y][x] = 0

def wall_ari(res):
  dq = deque(res)
  nowy, nowx = 0, 0
  while dq:
    d = dq.popleft()
    if cannot_move(nowx, nowy, d):
      move1(nowx, nowy, d)
      break
    nowy, nowx = change_yx(nowy, nowx, d)

def move1(x, y, d):
  if d == 'U':
    v[y-1][x] = 1
  if d == 'D':
    v[y][x] = 1
  if d == 'L':
    h[y][x-1] = 1
  if d == 'R':
    h[y][x] = 1


H, W, P = map(int, input().split())
h = [[-1]*20 for _ in range(20)]
v = [[-1]*20 for _ in range(20)]
DIRECT = ['U', 'D', 'L', 'R']
dx = [0, 0, -1, 1]
dy = [1, -1, 0, 0]

def bfs(si, sj):
  dist = [[-1]*20 for _ in range(20)]
  dq = deque([(si, sj)])
  dist[si][sj] = 0 
  while dq:
    nowy, nowx = dq.popleft()
    d = dist[nowy][nowx] + 1
    if can_move(nowx, nowy, 'D') and dist[nowy+1][nowx] == -1:
      dq.append((nowy+1, nowx))
      dist[nowy+1][nowx] = d
    if can_move(nowx, nowy, 'U') and dist[nowy-1][nowx] == -1:
      dq.append((nowy-1, nowx))
      dist[nowy-1][nowx] = d
    if can_move(nowx, nowy, 'R') and dist[nowy][nowx+1] == -1:
      dq.append((nowy, nowx+1))
      dist[nowy][nowx+1] = d
    if can_move(nowx, nowy, 'L') and dist[nowy][nowx-1] == -1:
      dq.append((nowy, nowx-1))
      dist[nowy][nowx-1] = d
  return dist
def get_root(dist, nowy, nowx):
  root = []
  while True:
    d = dist[nowy][nowx]
    if d == 0:
      break
    if   nowy+1 < 20 and v[nowy][nowx] == 0 and dist[nowy+1][nowx] == d-1:
      root.append('U')
      nowy += 1
    elif nowy-1 >= 0 and v[nowy-1][nowx] == 0 and dist[nowy-1][nowx] == d-1:
      root.append('D')
      nowy -= 1
    elif nowx+1 < 20 and h[nowy][nowx] == 0 and dist[nowy][nowx+1] == d-1:
      root.append('L')
      nowx += 1
    elif nowx-1 >= 0 and h[nowy][nowx-1] == 0 and dist[nowy][nowx-1] == d-1:
      root.append('R')
      nowx -= 1
  return list(reversed(root))

def get_goal(dist, nowy, nowx):
  while True:
    d = dist[nowy][nowx]
    if d == 0:
      break
    if   nowy+1 < 20 and v[nowy][nowx] == 0 and dist[nowy+1][nowx] == d-1:
      nowy += 1
    elif nowy-1 >= 0 and v[nowy-1][nowx] == 0 and dist[nowy-1][nowx] == d-1:
      nowy -= 1
    elif nowx+1 < 20 and h[nowy][nowx] == 0 and dist[nowy][nowx+1] == d-1:
      nowx += 1
    elif nowx-1 >= 0 and h[nowy][nowx-1] == 0 and dist[nowy][nowx-1] == d-1:
      nowx -= 1
  return (nowy, nowx)



def same(d1, d2):
  if d1 == 'D' and d2 == 'U': return True
  if d1 == 'U' and d2 == 'D': return True
  if d1 == 'L' and d2 == 'R': return True
  if d1 == 'R' and d2 == 'L': return True
  return False

breakflag = False
ok = []
trynum = 0
seen = set()
while trynum < 995:
  dist = bfs(0, 0)
  # solve?

  # if dist[19][19] != -1:
  #   print(get_root(dist, 19, 19), flush=True)
  #   resnum = input()
  #   if resnum == -1:
  #     break

  # if dist[4][4] != -1:
  #   print(get_root(dist, 4, 4), flush=True)
  #   resnum = input()
  #   if resnum == -1:
  #     break

  # search
  indx = (0, 0)
  for i in range(20):
    for j in range(20):
      if dist[i][j] != -1:
        if (i, j) not in seen or random.random() < 0.1:
          if i+j > indx[0]+indx[1]:
            indx = (i, j)
  gy, gx = indx
  seen.add((gy, gx))
  ans = get_root(dist, gy, gx)
  # error(*dist, sep='\n')
  # error()
  # error(*h, sep='\n')
  # error()
  # error(*v, sep='\n')
  for i in range(4):
    res = ans[:]
    if res and same(res[-1], DIRECT[i]): continue
    
    x, y = get_goal(dist, 0, 0)
    if cannot_move(x, y, DIRECT[i]) and random.random() > 0.9:
      continue
    if x == 0 and DIRECT[i] == 'L':
      continue
    if x == 19 and DIRECT[i] == 'R':
      continue
    if y == 0 and DIRECT[i] == 'U':
      continue
    if y == 19 and DIRECT[i] == 'D':
      continue

    res.append(DIRECT[i])
    pred = len(res)
    print(''.join(res), flush=True)
    trynum += 1
    resnum = int(input())
    if resnum == -1:
      breakflag = True
      break
    if pred == resnum:
      wall_nasi(res)
    else:
      wall_ari(res)  
  if breakflag:
    break
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