結果

問題 No.1288 yuki collection
ユーザー persimmon-persimmonpersimmon-persimmon
提出日時 2021-02-17 09:33:32
言語 PyPy3
(7.3.15)
結果
WA  
実行時間 -
コード長 2,135 bytes
コンパイル時間 319 ms
コンパイル使用メモリ 87,104 KB
実行使用メモリ 150,460 KB
最終ジャッジ日時 2023-10-11 21:09:10
合計ジャッジ時間 27,891 ms
ジャッジサーバーID
(参考情報)
judge15 / judge14
このコードへのチャレンジ
(要ログイン)

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 81 ms
150,460 KB
testcase_01 AC 81 ms
71,396 KB
testcase_02 AC 81 ms
71,124 KB
testcase_03 AC 129 ms
77,380 KB
testcase_04 AC 80 ms
71,256 KB
testcase_05 AC 79 ms
71,404 KB
testcase_06 AC 88 ms
75,592 KB
testcase_07 AC 78 ms
71,184 KB
testcase_08 AC 143 ms
78,004 KB
testcase_09 AC 117 ms
77,416 KB
testcase_10 AC 140 ms
77,544 KB
testcase_11 AC 111 ms
76,556 KB
testcase_12 AC 130 ms
77,440 KB
testcase_13 AC 1,119 ms
90,216 KB
testcase_14 AC 1,134 ms
91,332 KB
testcase_15 AC 928 ms
86,876 KB
testcase_16 AC 960 ms
87,272 KB
testcase_17 AC 1,164 ms
89,604 KB
testcase_18 WA -
testcase_19 AC 1,134 ms
89,620 KB
testcase_20 AC 1,109 ms
86,416 KB
testcase_21 AC 1,070 ms
87,808 KB
testcase_22 AC 1,208 ms
92,536 KB
testcase_23 AC 1,170 ms
91,572 KB
testcase_24 WA -
testcase_25 WA -
testcase_26 WA -
testcase_27 AC 679 ms
85,160 KB
testcase_28 AC 755 ms
86,464 KB
testcase_29 WA -
testcase_30 AC 269 ms
80,488 KB
testcase_31 AC 279 ms
81,348 KB
testcase_32 AC 279 ms
81,480 KB
testcase_33 TLE -
testcase_34 -- -
testcase_35 -- -
testcase_36 -- -
testcase_37 -- -
testcase_38 -- -
testcase_39 -- -
testcase_40 -- -
testcase_41 -- -
testcase_42 -- -
権限があれば一括ダウンロードができます

ソースコード

diff #

import sys
input=sys.stdin.readline
# 最小費用流
from heapq import heappush, heappop
class MinCostFlow:
  INF = 10**18

  def __init__(self, N):
    self.N = N
    self.G = [[] for i in range(N)]

  def add_edge(self, fr, to, cap, cost):
    forward = [to, cap, cost, None]
    backward = forward[3] = [fr, 0, -cost, forward]
    self.G[fr].append(forward)
    self.G[to].append(backward)

  def flow(self, s, t, f):
    N = self.N; G = self.G
    INF = MinCostFlow.INF

    res = 0
    H = [0]*N
    prv_v = [0]*N
    prv_e = [None]*N

    d0 = [INF]*N
    dist = [INF]*N

    while f:
      dist[:] = d0
      dist[s] = 0
      que = [(0, s)]

      while que:
        c, v = heappop(que)
        if dist[v] < c:
          continue
        r0 = dist[v] + H[v]
        for e in G[v]:
          w, cap, cost, _ = e
          if cap > 0 and r0 + cost - H[w] < dist[w]:
            dist[w] = r = r0 + cost - H[w]
            prv_v[w] = v; prv_e[w] = e
            heappush(que, (r, w))
      if dist[t] == INF:
        return res
        return None

      for i in range(N):
        H[i] += dist[i]

      d = f; v = t
      while v != s:
        d = min(d, prv_e[v][1])
        v = prv_v[v]
      f -= d
      res += d * H[t]
      v = t
      while v != s:
        e = prv_e[v]
        e[1] -= d
        e[3][1] += d
        v = prv_v[v]
    return res


def main1(n,s,v):
  mcf=MinCostFlow(n+2)
  inf=float('inf')

  # n->n+1
  for i in range(n):
    if s[i]=='y':
      mcf.add_edge(n,i,inf,0)
      break
  
  for i in range(n):
    if s[i]=='i':
      mcf.add_edge(i,n+1,1,-v[i])
    for j in range(i+1,n):
      if s[i]==s[j]:
        mcf.add_edge(i,j,inf,0)
        break
    for j in range(i+1,n):
      # j<i:
      if s[i]=='y' and s[j]=='u':
        mcf.add_edge(i,j,1,-v[i])
        break
      elif s[i]=='u' and s[j]=='k':
        mcf.add_edge(i,j,1,-v[i])
        break
      elif s[i]=='k' and s[j]=='i':
        mcf.add_edge(i,j,1,-v[i])
        break
  return -mcf.flow(n,n+1,501)

if __name__=='__main__':
  n=int(input())
  s=list(input())
  v=list(map(int,input().split()))
  ret1=main1(n,s,v)
  print(ret1)
0