結果
問題 | No.1324 Approximate the Matrix |
ユーザー | ああいい |
提出日時 | 2022-04-14 11:17:55 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 771 ms / 2,000 ms |
コード長 | 2,577 bytes |
コンパイル時間 | 267 ms |
コンパイル使用メモリ | 82,276 KB |
実行使用メモリ | 90,136 KB |
最終ジャッジ日時 | 2024-06-06 14:05:52 |
合計ジャッジ時間 | 11,824 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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 | 39 ms
53,196 KB |
testcase_01 | AC | 40 ms
53,776 KB |
testcase_02 | AC | 39 ms
54,716 KB |
testcase_03 | AC | 469 ms
84,004 KB |
testcase_04 | AC | 451 ms
84,056 KB |
testcase_05 | AC | 505 ms
84,180 KB |
testcase_06 | AC | 458 ms
83,828 KB |
testcase_07 | AC | 454 ms
83,888 KB |
testcase_08 | AC | 142 ms
77,924 KB |
testcase_09 | AC | 157 ms
78,408 KB |
testcase_10 | AC | 170 ms
78,492 KB |
testcase_11 | AC | 215 ms
79,592 KB |
testcase_12 | AC | 163 ms
78,476 KB |
testcase_13 | AC | 132 ms
77,808 KB |
testcase_14 | AC | 223 ms
80,216 KB |
testcase_15 | AC | 158 ms
78,160 KB |
testcase_16 | AC | 117 ms
76,636 KB |
testcase_17 | AC | 235 ms
79,860 KB |
testcase_18 | AC | 152 ms
78,252 KB |
testcase_19 | AC | 161 ms
77,992 KB |
testcase_20 | AC | 117 ms
77,524 KB |
testcase_21 | AC | 138 ms
77,320 KB |
testcase_22 | AC | 60 ms
69,288 KB |
testcase_23 | AC | 215 ms
79,572 KB |
testcase_24 | AC | 265 ms
80,816 KB |
testcase_25 | AC | 231 ms
79,728 KB |
testcase_26 | AC | 211 ms
79,284 KB |
testcase_27 | AC | 183 ms
78,580 KB |
testcase_28 | AC | 39 ms
53,296 KB |
testcase_29 | AC | 51 ms
63,436 KB |
testcase_30 | AC | 50 ms
62,288 KB |
testcase_31 | AC | 59 ms
66,072 KB |
testcase_32 | AC | 40 ms
54,588 KB |
testcase_33 | AC | 39 ms
53,992 KB |
testcase_34 | AC | 40 ms
54,244 KB |
testcase_35 | AC | 44 ms
59,552 KB |
testcase_36 | AC | 39 ms
55,204 KB |
testcase_37 | AC | 771 ms
90,012 KB |
testcase_38 | AC | 750 ms
89,800 KB |
testcase_39 | AC | 745 ms
90,004 KB |
testcase_40 | AC | 759 ms
90,136 KB |
testcase_41 | AC | 746 ms
89,912 KB |
testcase_42 | AC | 59 ms
70,512 KB |
testcase_43 | AC | 58 ms
72,100 KB |
testcase_44 | AC | 58 ms
71,772 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 ** 6 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)