結果

問題 No.134 走れ！サブロー君
ユーザー tobusakana
提出日時 2022-10-25 00:47:56
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 91 ms / 5,000 ms
コード長 1,396 bytes
コンパイル時間 398 ms
コンパイル使用メモリ 82,148 KB
実行使用メモリ 77,452 KB
最終ジャッジ日時 2024-07-03 03:12:02
合計ジャッジ時間 1,787 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge3
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ファイルパターン 結果
other AC * 15
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ソースコード

diff #
プレゼンテーションモードにする

import sys
readline = sys.stdin.readline
X,Y = map(int,readline().split())
N = int(readline())
cities = [None] * N
W = [-1] * N
all_w = 0
for i in range(N):
  x,y,w = readline().split()
  cities[i] = [int(x),int(y)]
  W[i] = float(w)
  all_w += W[i]
dist_from_start = [0] * N
for i in range(N):
  dist_from_start[i] = abs(cities[i][0] - X) + abs(cities[i][1] - Y)
  
start_T = (all_w + 100) / 120
INF = 1 << 60
dp = [[INF] * (1 << N) for i in range(N)]
for i in range(N):
  dp[i][1 << i] = start_T * dist_from_start[i] + W[i]
  
dist = [[0] * N for i in range(N)]
for i in range(N - 1):
  for j in range(i + 1, N):
    d = abs(cities[i][0] - cities[j][0]) + abs(cities[i][1] - cities[j][1])
    dist[i][j] = d
    dist[j][i] = d
  
for status in range(1 << N):
  weight = 0
  for i in range(N):
    if (status >> i) & 1 == 0: # まだ下ろしていない荷物
      weight += W[i]
  speed = (weight + 100) / 120
  for from_v in range(N):
    if (status >> from_v) & 1 == 0:
      continue
    for to_v in range(N):
      if (status >> to_v) & 1:
        continue
      next_status = status | (1 << to_v)
      time = dp[from_v][status] + speed * dist[from_v][to_v] + W[to_v]
      if dp[to_v][next_status] > time:
        dp[to_v][next_status] = time
ans = INF
for i in range(N):
  arrival = dp[i][-1] + (100 / 120) * dist_from_start[i]
  if ans > arrival:
    ans = arrival
  
print(ans)  
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