結果
問題 | No.1288 yuki collection |
ユーザー | hiragn |
提出日時 | 2022-12-13 16:21:47 |
言語 | Python3 (3.12.2 + numpy 1.26.4 + scipy 1.12.0) |
結果 |
AC
|
実行時間 | 2,927 ms / 5,000 ms |
コード長 | 2,728 bytes |
コンパイル時間 | 248 ms |
コンパイル使用メモリ | 13,184 KB |
実行使用メモリ | 12,800 KB |
最終ジャッジ日時 | 2024-11-07 11:18:22 |
合計ジャッジ時間 | 56,649 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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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 | 30 ms
11,136 KB |
testcase_01 | AC | 30 ms
11,136 KB |
testcase_02 | AC | 31 ms
11,008 KB |
testcase_03 | AC | 34 ms
11,008 KB |
testcase_04 | AC | 31 ms
11,008 KB |
testcase_05 | AC | 33 ms
11,008 KB |
testcase_06 | AC | 32 ms
11,008 KB |
testcase_07 | AC | 31 ms
11,136 KB |
testcase_08 | AC | 35 ms
11,264 KB |
testcase_09 | AC | 34 ms
11,136 KB |
testcase_10 | AC | 35 ms
11,136 KB |
testcase_11 | AC | 32 ms
11,136 KB |
testcase_12 | AC | 35 ms
11,136 KB |
testcase_13 | AC | 2,772 ms
12,672 KB |
testcase_14 | AC | 2,596 ms
12,672 KB |
testcase_15 | AC | 2,150 ms
12,544 KB |
testcase_16 | AC | 2,144 ms
12,544 KB |
testcase_17 | AC | 2,621 ms
12,672 KB |
testcase_18 | AC | 2,894 ms
12,800 KB |
testcase_19 | AC | 2,895 ms
12,672 KB |
testcase_20 | AC | 2,726 ms
12,800 KB |
testcase_21 | AC | 2,253 ms
12,672 KB |
testcase_22 | AC | 2,260 ms
12,672 KB |
testcase_23 | AC | 2,250 ms
12,800 KB |
testcase_24 | AC | 2,927 ms
12,672 KB |
testcase_25 | AC | 2,864 ms
12,800 KB |
testcase_26 | AC | 2,769 ms
12,672 KB |
testcase_27 | AC | 1,137 ms
12,672 KB |
testcase_28 | AC | 1,430 ms
12,672 KB |
testcase_29 | AC | 1,737 ms
12,672 KB |
testcase_30 | AC | 120 ms
12,544 KB |
testcase_31 | AC | 157 ms
12,672 KB |
testcase_32 | AC | 160 ms
12,544 KB |
testcase_33 | AC | 2,354 ms
12,672 KB |
testcase_34 | AC | 1,939 ms
12,544 KB |
testcase_35 | AC | 1,847 ms
12,800 KB |
testcase_36 | AC | 2,151 ms
12,672 KB |
testcase_37 | AC | 2,137 ms
12,672 KB |
testcase_38 | AC | 1,259 ms
12,544 KB |
testcase_39 | AC | 1,267 ms
12,544 KB |
testcase_40 | AC | 67 ms
12,416 KB |
testcase_41 | AC | 31 ms
11,008 KB |
testcase_42 | AC | 31 ms
11,008 KB |
ソースコード
from heapq import heappush, heappop class MinCostFlow: INF = 10 ** 18 def __init__(self, N): self.N = N self.G = [[] for _ 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 = [0] * 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 main(): n = int(input()) s = input() v = [0] + list(map(int, input().split())) d = {"y": 0, "u": 1, "k": 2, "i": 3} idx = [[] for _ in range(4)] for i, c in enumerate(s, 1): idx[d[c]].append(i) g = MinCostFlow(n + 2) infty = 10 ** 10 # 始点から1個目のyへ if idx[0]: g.add_edge(0, idx[0][0], infty, 0) # すべてのiから終点へ for x in idx[-1]: g.add_edge(x, n + 1, 1, infty - v[x]) # y-u, u-k, k-i間 for i in range(3): for fr in idx[i]: to = next(filter(lambda t: t > fr, idx[i + 1]), None) if to: g.add_edge(fr, to, 1, infty - v[fr]) # 同じ文字間 for x in idx: for i in range(len(x) - 1): g.add_edge(x[i], x[i + 1], infty, 0) # 結果表示 ans = 0 while True: tmp = g.flow(0, n + 1, 1) if tmp is None: break tmp = 4 * infty - tmp if tmp < 0: break ans += tmp print(ans) if __name__ == "__main__": main()