結果
問題 | No.1324 Approximate the Matrix |
ユーザー | ああいい |
提出日時 | 2022-04-14 11:17:16 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 766 ms / 2,000 ms |
コード長 | 2,578 bytes |
コンパイル時間 | 352 ms |
コンパイル使用メモリ | 82,436 KB |
実行使用メモリ | 90,112 KB |
最終ジャッジ日時 | 2024-06-06 14:05:40 |
合計ジャッジ時間 | 11,915 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 39 ms
53,136 KB |
testcase_01 | AC | 38 ms
52,864 KB |
testcase_02 | AC | 38 ms
53,120 KB |
testcase_03 | AC | 457 ms
83,836 KB |
testcase_04 | AC | 449 ms
83,924 KB |
testcase_05 | AC | 505 ms
83,920 KB |
testcase_06 | AC | 465 ms
83,584 KB |
testcase_07 | AC | 470 ms
83,892 KB |
testcase_08 | AC | 143 ms
78,136 KB |
testcase_09 | AC | 155 ms
78,228 KB |
testcase_10 | AC | 177 ms
78,376 KB |
testcase_11 | AC | 215 ms
79,392 KB |
testcase_12 | AC | 163 ms
78,404 KB |
testcase_13 | AC | 133 ms
77,860 KB |
testcase_14 | AC | 223 ms
80,332 KB |
testcase_15 | AC | 159 ms
78,080 KB |
testcase_16 | AC | 116 ms
76,392 KB |
testcase_17 | AC | 228 ms
79,996 KB |
testcase_18 | AC | 155 ms
78,580 KB |
testcase_19 | AC | 162 ms
77,936 KB |
testcase_20 | AC | 118 ms
77,788 KB |
testcase_21 | AC | 134 ms
77,472 KB |
testcase_22 | AC | 60 ms
68,864 KB |
testcase_23 | AC | 217 ms
79,560 KB |
testcase_24 | AC | 260 ms
80,804 KB |
testcase_25 | AC | 228 ms
79,696 KB |
testcase_26 | AC | 211 ms
79,500 KB |
testcase_27 | AC | 180 ms
78,560 KB |
testcase_28 | AC | 39 ms
52,736 KB |
testcase_29 | AC | 51 ms
62,720 KB |
testcase_30 | AC | 50 ms
62,080 KB |
testcase_31 | AC | 59 ms
65,408 KB |
testcase_32 | AC | 40 ms
52,992 KB |
testcase_33 | AC | 40 ms
53,248 KB |
testcase_34 | AC | 41 ms
53,376 KB |
testcase_35 | AC | 43 ms
58,880 KB |
testcase_36 | AC | 40 ms
53,376 KB |
testcase_37 | AC | 705 ms
90,112 KB |
testcase_38 | AC | 766 ms
89,720 KB |
testcase_39 | AC | 698 ms
89,996 KB |
testcase_40 | AC | 740 ms
89,728 KB |
testcase_41 | AC | 734 ms
89,600 KB |
testcase_42 | AC | 58 ms
70,272 KB |
testcase_43 | AC | 58 ms
70,272 KB |
testcase_44 | AC | 58 ms
70,272 KB |
ソースコード
#その2 最初はコストが全部正の場合に使えるダイクストラ from heapq import heappush,heappop class MinCostFlow: inf = 10 ** 10 def __init__(self,N): self.N = N self.G = [[] for _ in range(N)] self.H = [0] * N self.edge = [] def add_edge(self,fr,to,cap,cost): e = [to,cap,cost,None] r = e[3] = [fr,0,-cost,e] self.G[fr].append(e) self.G[to].append(r) self.edge.append(e) def get_edge(self,i): return self.edge[i] def flow(self,s,t,f): N = self.N G = self.G inf = MinCostFlow.inf res = 0 H = self.H #ポテンシャル、コストが最初は正なので、最初は0でいい prev_v = [0] * N prev_e = [None] * N d0 = [inf] * N dist = [inf] * N while f: dist[:] = d0 dist[s] = 0 q = [(0,s)] while q: c,v = heappop(q) if dist[v] < c:continue #if v == t:break 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] prev_v[w] = v prev_e[w] = e heappush(q,(r,w)) if dist[t] == inf: return None for i in range(N): H[i] += dist[i] #H = [h + d if d < inf else h for h,d in zip(H,dist)] d = f v = t while v != s: d = min(d,prev_e[v][1]) v = prev_v[v] f -= d res += d * H[t] v = t while v != s: e = prev_e[v] e[1] -= d e[3][1] += d v = prev_v[v] return res N,K = map(int,input().split()) A = list(map(int,input().split())) B = list(map(int,input().split())) P = [list(map(int,input().split())) for _ in range(N)] mincost = MinCostFlow(N + N + 2) s = N + N t = N + N + 1 for i in range(N): for j in range(N): v = N + j for k in range(1,min(A[i],B[j])+1): mincost.add_edge(i,v,1,2 * (k - 1) + 1 - 2 * P[i][j]) for i in range(N): mincost.add_edge(s,i,A[i],0) for j in range(N): mincost.add_edge(j + N,t,B[j],0) ans = 0 for i in range(N): for j in range(N): ans += P[i][j] ** 2 ans += mincost.flow(s,t,K) print(ans)