結果
問題 | No.1744 Selfish Spies 1 (à la Princess' Perfectionism) |
ユーザー | ああいい |
提出日時 | 2022-03-29 23:05:10 |
言語 | PyPy3 (7.3.15) |
結果 |
TLE
|
実行時間 | - |
コード長 | 3,537 bytes |
コンパイル時間 | 223 ms |
コンパイル使用メモリ | 82,560 KB |
実行使用メモリ | 282,776 KB |
最終ジャッジ日時 | 2024-11-08 21:39:01 |
合計ジャッジ時間 | 17,426 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | 48 ms
54,528 KB |
testcase_01 | AC | 49 ms
54,912 KB |
testcase_02 | AC | 49 ms
54,656 KB |
testcase_03 | AC | 47 ms
54,272 KB |
testcase_04 | AC | 48 ms
54,528 KB |
testcase_05 | AC | 49 ms
54,656 KB |
testcase_06 | AC | 49 ms
54,528 KB |
testcase_07 | AC | 50 ms
54,656 KB |
testcase_08 | AC | 49 ms
54,400 KB |
testcase_09 | AC | 115 ms
76,928 KB |
testcase_10 | AC | 156 ms
77,860 KB |
testcase_11 | AC | 187 ms
78,392 KB |
testcase_12 | AC | 280 ms
79,488 KB |
testcase_13 | AC | 195 ms
78,880 KB |
testcase_14 | AC | 776 ms
94,784 KB |
testcase_15 | AC | 398 ms
85,712 KB |
testcase_16 | AC | 708 ms
97,628 KB |
testcase_17 | AC | 2,930 ms
215,404 KB |
testcase_18 | AC | 2,829 ms
240,396 KB |
testcase_19 | AC | 156 ms
77,972 KB |
testcase_20 | AC | 154 ms
77,732 KB |
testcase_21 | AC | 221 ms
79,240 KB |
testcase_22 | AC | 287 ms
79,652 KB |
testcase_23 | AC | 209 ms
78,604 KB |
testcase_24 | TLE | - |
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 | -- | - |
ソースコード
#Dinic法で最大流を求める #deque のimport が必要 #逆辺追加しなきゃいけないから、 #グラフの構成はadd_edgeで行う #最大流は flow メソッドで from collections import deque class Dinic: def __init__(self,N): self.N = N self.G = [[] for _ in range(N)] self.level = None self.progress = None self.edge = [] def add_edge(self,fr,to,cap): forward = [to,cap,None] forward[2] = backward = [fr,0,forward] self.G[fr].append(forward) self.G[to].append(backward) self.edge.append(forward) def add_multi_edge(self,v1,v2,cap1,cap2): edge1 = [v2,cap1,None] edge1[2] = edge2 = [v1,cap2,edge1] self.G[v1].append(edge1) self.G[v2].append(edge2) self.edge.append(edge1) def get_edge(self,i): return self.edge[i] # i 回目に追加した辺のポインタを返す # 0-index, 順辺のみ def bfs(self,s,t): self.level = level = [None] * self.N q = deque([s]) level[s] = 0 G = self.G while q: v = q.popleft() lv = level[v] + 1 for w,cap,_ in G[v]: if cap and level[w] is None: level[w] = lv q.append(w) return level[t] is not None def dfs(self, v, t, f): if v == t: return f level = self.level for e in self.it[v]: w, cap, rev = e if cap and level[v] < level[w]: d = self.dfs(w, t, min(f, cap)) if d: e[1] -= d rev[1] += d return d else: pass else: pass return 0 def flow(self, s, t): flow = 0 INF = 10**9 + 7 G = self.G while self.bfs(s, t): *self.it, = map(iter, self.G) f = INF while f: f = self.dfs(s, t, INF) flow += f return flow def min_cut(self,s): #最小カットを実現する頂点の分割を与える #True なら source側 #False なら sink側 visited = [False for i in range(self.N)] q = deque([s]) while q: now = q.popleft() visited[now] = True for to,cap,_ in self.G[now]: if cap and not visited[to]: visited[to] = True q.append(to) return visited import sys rr = sys.stdin N,M,L = map(int,rr.readline().split()) edge = [] for _ in range(L): s,t = map(int,rr.readline().split()) edge.append((s,t)) dinic = Dinic(N + M + 2) start = 0 end = N + M + 1 for s,t in edge: dinic.add_edge(s,t + N,1) for i in range(1,N+1): dinic.add_edge(0,i,1) for j in range(1,M+1): dinic.add_edge(j + N,end,1) ans = [0] * L F = dinic.flow(start,end) for i in range(L): if dinic.get_edge(i)[1] == 1: ans[i] = 1 for i in range(L): if ans[i] == 1:continue dinic = Dinic(N + M + 2) for j in range(L): if j == i:continue s,t = edge[j] dinic.add_edge(s,t+N,1) for j in range(1,N+1): dinic.add_edge(start,j,1) for j in range(1,M+1): dinic.add_edge(j + N,end,1) if dinic.flow(start,end) != F: pass else: ans[i] = 1 for a in ans: if a == 0: print('No') else: print('Yes')