結果
問題 | No.1288 yuki collection |
ユーザー | persimmon-persimmon |
提出日時 | 2021-02-17 10:07:40 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 1,048 ms / 5,000 ms |
コード長 | 1,897 bytes |
コンパイル時間 | 204 ms |
コンパイル使用メモリ | 82,212 KB |
実行使用メモリ | 89,988 KB |
最終ジャッジ日時 | 2024-09-13 20:29:42 |
合計ジャッジ時間 | 23,926 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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 | 42 ms
53,120 KB |
testcase_01 | AC | 46 ms
53,376 KB |
testcase_02 | AC | 42 ms
53,120 KB |
testcase_03 | AC | 78 ms
73,216 KB |
testcase_04 | AC | 40 ms
52,608 KB |
testcase_05 | AC | 41 ms
52,736 KB |
testcase_06 | AC | 46 ms
59,392 KB |
testcase_07 | AC | 40 ms
53,348 KB |
testcase_08 | AC | 96 ms
76,076 KB |
testcase_09 | AC | 80 ms
74,664 KB |
testcase_10 | AC | 94 ms
75,956 KB |
testcase_11 | AC | 70 ms
69,504 KB |
testcase_12 | AC | 99 ms
76,152 KB |
testcase_13 | AC | 985 ms
87,728 KB |
testcase_14 | AC | 947 ms
87,512 KB |
testcase_15 | AC | 824 ms
85,044 KB |
testcase_16 | AC | 793 ms
84,908 KB |
testcase_17 | AC | 1,012 ms
87,864 KB |
testcase_18 | AC | 1,001 ms
88,516 KB |
testcase_19 | AC | 956 ms
87,704 KB |
testcase_20 | AC | 895 ms
84,588 KB |
testcase_21 | AC | 990 ms
86,448 KB |
testcase_22 | AC | 1,023 ms
89,856 KB |
testcase_23 | AC | 1,009 ms
89,988 KB |
testcase_24 | AC | 997 ms
87,900 KB |
testcase_25 | AC | 914 ms
84,324 KB |
testcase_26 | AC | 1,014 ms
88,368 KB |
testcase_27 | AC | 540 ms
82,984 KB |
testcase_28 | AC | 613 ms
84,188 KB |
testcase_29 | AC | 528 ms
83,148 KB |
testcase_30 | AC | 156 ms
79,328 KB |
testcase_31 | AC | 171 ms
79,232 KB |
testcase_32 | AC | 171 ms
79,500 KB |
testcase_33 | AC | 888 ms
85,780 KB |
testcase_34 | AC | 1,017 ms
87,180 KB |
testcase_35 | AC | 1,022 ms
86,648 KB |
testcase_36 | AC | 1,043 ms
84,804 KB |
testcase_37 | AC | 1,048 ms
84,496 KB |
testcase_38 | AC | 449 ms
80,628 KB |
testcase_39 | AC | 476 ms
81,140 KB |
testcase_40 | AC | 104 ms
78,188 KB |
testcase_41 | AC | 40 ms
52,992 KB |
testcase_42 | AC | 40 ms
52,992 KB |
ソースコード
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+1) inf=10**9 # n->n+1 ary=[n+1]*5 ary[4]=n d={'y':0,'u':1,'k':2,'i':3} for i in range(n-1,-1,-1): k=d[s[i]] if ary[k]<n+1: mcf.add_edge(i,ary[k],n//4,0) if ary[k+1]<n+1: mcf.add_edge(i,ary[k+1],1,inf-v[i]) ary[k]=i if ary[0]==n+1: return 0 mcf.add_edge(ary[0],n,n//4,inf*4) return 4*inf*(n//4)-mcf.flow(ary[0],n,n//4) if __name__=='__main__': n=int(input()) s=list(input()) v=list(map(int,input().split())) ret1=main1(n,s,v) print(ret1)