結果
問題 | No.1900 Don't be Powers of 2 |
ユーザー | Shirotsume |
提出日時 | 2022-02-25 18:29:42 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 142 ms / 2,000 ms |
コード長 | 4,717 bytes |
コンパイル時間 | 129 ms |
コンパイル使用メモリ | 82,436 KB |
実行使用メモリ | 88,860 KB |
最終ジャッジ日時 | 2024-07-18 11:09:55 |
合計ジャッジ時間 | 4,259 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 | 38 ms
54,912 KB |
testcase_01 | AC | 38 ms
54,784 KB |
testcase_02 | AC | 39 ms
54,656 KB |
testcase_03 | AC | 103 ms
79,096 KB |
testcase_04 | AC | 94 ms
79,156 KB |
testcase_05 | AC | 96 ms
79,196 KB |
testcase_06 | AC | 95 ms
79,064 KB |
testcase_07 | AC | 94 ms
78,996 KB |
testcase_08 | AC | 100 ms
80,048 KB |
testcase_09 | AC | 80 ms
78,976 KB |
testcase_10 | AC | 66 ms
74,240 KB |
testcase_11 | AC | 81 ms
78,268 KB |
testcase_12 | AC | 106 ms
80,820 KB |
testcase_13 | AC | 43 ms
63,104 KB |
testcase_14 | AC | 83 ms
79,104 KB |
testcase_15 | AC | 48 ms
62,592 KB |
testcase_16 | AC | 46 ms
62,464 KB |
testcase_17 | AC | 89 ms
79,092 KB |
testcase_18 | AC | 85 ms
78,808 KB |
testcase_19 | AC | 90 ms
79,196 KB |
testcase_20 | AC | 85 ms
78,956 KB |
testcase_21 | AC | 83 ms
79,024 KB |
testcase_22 | AC | 82 ms
78,848 KB |
testcase_23 | AC | 46 ms
65,152 KB |
testcase_24 | AC | 46 ms
65,024 KB |
testcase_25 | AC | 56 ms
67,328 KB |
testcase_26 | AC | 53 ms
67,328 KB |
testcase_27 | AC | 67 ms
71,936 KB |
testcase_28 | AC | 107 ms
81,428 KB |
testcase_29 | AC | 102 ms
81,120 KB |
testcase_30 | AC | 65 ms
73,336 KB |
testcase_31 | AC | 37 ms
54,784 KB |
testcase_32 | AC | 36 ms
54,656 KB |
testcase_33 | AC | 44 ms
64,896 KB |
testcase_34 | AC | 45 ms
65,152 KB |
testcase_35 | AC | 48 ms
67,200 KB |
testcase_36 | AC | 48 ms
67,564 KB |
testcase_37 | AC | 142 ms
88,860 KB |
testcase_38 | AC | 44 ms
63,232 KB |
testcase_39 | AC | 41 ms
61,056 KB |
testcase_40 | AC | 106 ms
79,960 KB |
testcase_41 | AC | 110 ms
80,036 KB |
testcase_42 | AC | 37 ms
54,784 KB |
testcase_43 | AC | 36 ms
54,656 KB |
testcase_44 | AC | 36 ms
54,400 KB |
ソースコード
from collections import deque class mf_graph: n=1 g=[[] for i in range(1)] pos=[] def __init__(self,N): self.n=N self.g=[[] for i in range(N)] self.pos=[] def add_edge(self,From,To,cap): assert 0<=From and From<self.n assert 0<=To and To<self.n assert 0<=cap m=len(self.pos) self.pos.append((From,len(self.g[From]))) self.g[From].append({"to":To,"rev":len(self.g[To]),"cap":cap}) self.g[To].append({"to":From,"rev":len(self.g[From])-1,"cap":0}) return m def get_edge(self,i): m=len(self.pos) assert 0<=i and i<m _e=self.g[self.pos[i][0]][self.pos[i][1]] _re=self.g[_e["to"]][_e["rev"]] return {"from":self.pos[i][0], "to":_e["to"], "cap":_e["cap"]+_re["cap"], "flow":_re["cap"]} def edges(self): m=len(self.pos) result=[] for i in range(m): result.append(self.get_edge(i)) return result def change_edge(self,i,new_cap,new_flow): m=len(self.pos) assert 0<=i and i<m assert 0<=new_flow and new_flow<=new_cap _e=self.g[self.pos[i][0]][self.pos[i][1]] _re=self.g[_e["to"]][_e["rev"]] _e["cap"]=new_cap-new_flow _re["cap"]=new_flow def flow(self,s,t,flow_limit=(1<<63)-1): assert 0<=s and s<self.n assert 0<=t and t<self.n level=[0 for i in range(self.n)] Iter=[0 for i in range(self.n)] que=deque([]) def bfs(): for i in range(self.n):level[i]=-1 level[s]=0 que=deque([]) que.append(s) while(len(que)>0): v=que.popleft() for e in self.g[v]: if e["cap"]==0 or level[e["to"]]>=0:continue level[e["to"]]=level[v]+1 if e["to"]==t:return que.append(e["to"]) def dfs(func,v,up): if (v==s):return up res=0 level_v=level[v] for i in range(Iter[v],len(self.g[v])): e=self.g[v][i] if (level_v<=level[e["to"]] or self.g[e["to"]][e["rev"]]["cap"]==0):continue d=func(func,e["to"],min(up-res,self.g[e["to"]][e["rev"]]["cap"])) if d<=0:continue self.g[v][i]["cap"]+=d self.g[e["to"]][e["rev"]]["cap"]-=d res+=d if res==up:return res level[v]=self.n return res flow=0 while(flow<flow_limit): bfs() if level[t]==-1:break for i in range(self.n):Iter[i]=0 while(flow<flow_limit): f=dfs(dfs,t,flow_limit-flow) if not(f):break flow+=f return flow def min_cut(self,s): visited=[False for i in range(self.n)] que=deque([]) que.append(s) while(len(que)>0): p=que.popleft() visited[p]=True for e in self.g[p]: if e["cap"] and not(visited[e["to"]]): visited[e["to"]]=True que.append(e["to"]) return visited #https://qiita.com/zawawahoge/items/8bbd4c2319e7f7746266 def Popcount(x): '''xの立っているビット数をカウントする関数 (xは64bit整数)''' # 2bitごとの組に分け、立っているビット数を2bitで表現する x = x - ((x >> 1) & 0x5555555555555555) # 4bit整数に 上位2bit + 下位2bit を計算した値を入れる x = (x & 0x3333333333333333) + ((x >> 2) & 0x3333333333333333) x = (x + (x >> 4)) & 0x0f0f0f0f0f0f0f0f # 8bitごと x = x + (x >> 8) # 16bitごと x = x + (x >> 16) # 32bitごと x = x + (x >> 32) # 64bitごと = 全部の合計 return x & 0x0000007f N = int(input()) A = list(map(int,input().split())) from collections import Counter even = Counter() odd = Counter() cntodd = 0 cnteven = 0 for i in range(N): if Popcount(A[i]) % 2 and odd[A[i]] == 0: cntodd += 1 odd[A[i]] = cntodd elif Popcount(A[i]) % 2 == 0 and even[A[i]] == 0: cnteven += 1 even[A[i]] = cnteven n = len(odd.keys()) m = len(even.keys()) G = mf_graph(n + m + 2) l = list(odd.keys()) A = Counter(A) for i in range(n): G.add_edge(0, i + 1, A[l[i]]) l = list(even.keys()) for i in range(m): G.add_edge(n + i + 1, n + m + 1, A[l[i]]) for v1, c1 in odd.items(): for v2, c2 in even.items(): if Popcount(v1 ^ v2) == 1: G.add_edge(c1, n + c2, A[v1] * A[v2]) f = G.flow(0, n + m + 1) print(N - f)