結果
問題 | No.1288 yuki collection |
ユーザー | persimmon-persimmon |
提出日時 | 2021-02-17 09:08:04 |
言語 | PyPy3 (7.3.15) |
結果 |
TLE
|
実行時間 | - |
コード長 | 2,014 bytes |
コンパイル時間 | 339 ms |
コンパイル使用メモリ | 82,000 KB |
実行使用メモリ | 189,028 KB |
最終ジャッジ日時 | 2024-09-13 19:36:58 |
合計ジャッジ時間 | 8,231 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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 | 41 ms
61,816 KB |
testcase_01 | AC | 40 ms
53,280 KB |
testcase_02 | AC | 42 ms
54,168 KB |
testcase_03 | AC | 128 ms
76,664 KB |
testcase_04 | AC | 40 ms
53,148 KB |
testcase_05 | AC | 41 ms
53,984 KB |
testcase_06 | AC | 88 ms
76,096 KB |
testcase_07 | AC | 41 ms
53,400 KB |
testcase_08 | AC | 139 ms
76,520 KB |
testcase_09 | AC | 125 ms
76,860 KB |
testcase_10 | AC | 146 ms
77,304 KB |
testcase_11 | AC | 120 ms
76,112 KB |
testcase_12 | AC | 138 ms
76,584 KB |
testcase_13 | TLE | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
testcase_17 | -- | - |
testcase_18 | -- | - |
testcase_19 | -- | - |
testcase_20 | -- | - |
testcase_21 | -- | - |
testcase_22 | -- | - |
testcase_23 | -- | - |
testcase_24 | -- | - |
testcase_25 | -- | - |
testcase_26 | -- | - |
testcase_27 | -- | - |
testcase_28 | -- | - |
testcase_29 | -- | - |
testcase_30 | -- | - |
testcase_31 | -- | - |
testcase_32 | -- | - |
testcase_33 | -- | - |
testcase_34 | -- | - |
testcase_35 | -- | - |
testcase_36 | -- | - |
testcase_37 | -- | - |
testcase_38 | -- | - |
testcase_39 | -- | - |
testcase_40 | -- | - |
testcase_41 | -- | - |
testcase_42 | -- | - |
ソースコード
# 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 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(2*n+2) # 2*n->2*n+1 for i in range(n): mcf.add_edge(2*i,2*i+1,1,-v[i]) if s[i]=='y': mcf.add_edge(2*n,2*i,1,0) elif s[i]=='i': mcf.add_edge(2*i+1,2*n+1,1,0) for j in range(i): # j<i: if s[j]=='y' and s[i]=='u': mcf.add_edge(2*j+1,2*i,1,0) elif s[j]=='u' and s[i]=='k': mcf.add_edge(2*j+1,2*i,1,0) elif s[j]=='k' and s[i]=='i': mcf.add_edge(2*j+1,2*i,1,0) ans=0 for i in range(2,501): t=mcf.flow(2*n,2*n+1,1) if t is None:break ans-=t return ans if __name__=='__main__': n=int(input()) s=list(input()) v=list(map(int,input().split())) ret1=main1(n,s,v) print(ret1)