結果
問題 | No.1900 Don't be Powers of 2 |
ユーザー | vwxyz |
提出日時 | 2023-06-13 06:28:28 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 1,036 ms / 2,000 ms |
コード長 | 5,606 bytes |
コンパイル時間 | 183 ms |
コンパイル使用メモリ | 82,248 KB |
実行使用メモリ | 336,432 KB |
最終ジャッジ日時 | 2024-06-12 06:26:47 |
合計ジャッジ時間 | 14,676 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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 | 151 ms
89,220 KB |
testcase_01 | AC | 134 ms
89,328 KB |
testcase_02 | AC | 132 ms
89,364 KB |
testcase_03 | AC | 229 ms
92,500 KB |
testcase_04 | AC | 234 ms
92,568 KB |
testcase_05 | AC | 228 ms
92,568 KB |
testcase_06 | AC | 223 ms
92,492 KB |
testcase_07 | AC | 223 ms
92,784 KB |
testcase_08 | AC | 226 ms
92,960 KB |
testcase_09 | AC | 194 ms
92,864 KB |
testcase_10 | AC | 177 ms
92,236 KB |
testcase_11 | AC | 186 ms
92,280 KB |
testcase_12 | AC | 253 ms
95,596 KB |
testcase_13 | AC | 161 ms
90,060 KB |
testcase_14 | AC | 215 ms
91,940 KB |
testcase_15 | AC | 146 ms
89,980 KB |
testcase_16 | AC | 148 ms
90,148 KB |
testcase_17 | AC | 229 ms
92,572 KB |
testcase_18 | AC | 222 ms
91,848 KB |
testcase_19 | AC | 237 ms
91,920 KB |
testcase_20 | AC | 212 ms
92,072 KB |
testcase_21 | AC | 217 ms
91,896 KB |
testcase_22 | AC | 221 ms
92,500 KB |
testcase_23 | AC | 164 ms
91,908 KB |
testcase_24 | AC | 169 ms
92,392 KB |
testcase_25 | AC | 202 ms
92,276 KB |
testcase_26 | AC | 1,036 ms
332,680 KB |
testcase_27 | AC | 316 ms
117,936 KB |
testcase_28 | AC | 252 ms
96,724 KB |
testcase_29 | AC | 253 ms
96,004 KB |
testcase_30 | AC | 207 ms
92,176 KB |
testcase_31 | AC | 133 ms
89,508 KB |
testcase_32 | AC | 140 ms
89,288 KB |
testcase_33 | AC | 946 ms
330,848 KB |
testcase_34 | AC | 999 ms
336,432 KB |
testcase_35 | AC | 1,004 ms
336,100 KB |
testcase_36 | AC | 808 ms
300,432 KB |
testcase_37 | AC | 277 ms
95,520 KB |
testcase_38 | AC | 318 ms
144,652 KB |
testcase_39 | AC | 209 ms
115,400 KB |
testcase_40 | AC | 271 ms
93,852 KB |
testcase_41 | AC | 301 ms
96,384 KB |
testcase_42 | AC | 139 ms
89,412 KB |
testcase_43 | AC | 139 ms
89,416 KB |
testcase_44 | AC | 132 ms
89,392 KB |
ソースコード
import bisect import copy import decimal import fractions import heapq import itertools import math import random import sys import time from collections import Counter,deque,defaultdict from functools import lru_cache,reduce from heapq import heappush,heappop,heapify,heappushpop,_heappop_max,_heapify_max def _heappush_max(heap,item): heap.append(item) heapq._siftdown_max(heap, 0, len(heap)-1) def _heappushpop_max(heap, item): if heap and item < heap[0]: item, heap[0] = heap[0], item heapq._siftup_max(heap, 0) return item from math import gcd as GCD read=sys.stdin.read readline=sys.stdin.readline readlines=sys.stdin.readlines write=sys.stdout.write from typing import NamedTuple, Optional, List, cast class MFGraph: class Edge(NamedTuple): src: int dst: int cap: int flow: int class _Edge: def __init__(self, dst: int, cap: int) -> None: self.dst = dst self.cap = cap self.rev: Optional[MFGraph._Edge] = None def __init__(self, n: int) -> None: self._n = n self._g: List[List[MFGraph._Edge]] = [[] for _ in range(n)] self._edges: List[MFGraph._Edge] = [] def add_edge(self, src: int, dst: int, cap: int) -> int: assert 0 <= src < self._n assert 0 <= dst < self._n assert 0 <= cap m = len(self._edges) e = MFGraph._Edge(dst, cap) re = MFGraph._Edge(src, 0) e.rev = re re.rev = e self._g[src].append(e) self._g[dst].append(re) self._edges.append(e) return m def get_edge(self, i: int) -> Edge: assert 0 <= i < len(self._edges) e = self._edges[i] re = cast(MFGraph._Edge, e.rev) return MFGraph.Edge( re.dst, e.dst, e.cap + re.cap, re.cap ) def edges(self) -> List[Edge]: return [self.get_edge(i) for i in range(len(self._edges))] def change_edge(self, i: int, new_cap: int, new_flow: int) -> None: assert 0 <= i < len(self._edges) assert 0 <= new_flow <= new_cap e = self._edges[i] e.cap = new_cap - new_flow assert e.rev is not None e.rev.cap = new_flow def flow(self, s: int, t: int, flow_limit: Optional[int] = None) -> int: assert 0 <= s < self._n assert 0 <= t < self._n assert s != t if flow_limit is None: flow_limit = cast(int, sum(e.cap for e in self._g[s])) current_edge = [0] * self._n level = [0] * self._n def fill(arr: List[int], value: int) -> None: for i in range(len(arr)): arr[i] = value def bfs() -> bool: fill(level, self._n) queue = [] q_front = 0 queue.append(s) level[s] = 0 while q_front < len(queue): v = queue[q_front] q_front += 1 next_level = level[v] + 1 for e in self._g[v]: if e.cap == 0 or level[e.dst] <= next_level: continue level[e.dst] = next_level if e.dst == t: return True queue.append(e.dst) return False def dfs(lim: int) -> int: stack = [] edge_stack: List[MFGraph._Edge] = [] stack.append(t) while stack: v = stack[-1] if v == s: flow = min(lim, min(e.cap for e in edge_stack)) for e in edge_stack: e.cap -= flow assert e.rev is not None e.rev.cap += flow return flow next_level = level[v] - 1 while current_edge[v] < len(self._g[v]): e = self._g[v][current_edge[v]] re = cast(MFGraph._Edge, e.rev) if level[e.dst] != next_level or re.cap == 0: current_edge[v] += 1 continue stack.append(e.dst) edge_stack.append(re) break else: stack.pop() if edge_stack: edge_stack.pop() level[v] = self._n return 0 flow = 0 while flow < flow_limit: if not bfs(): break fill(current_edge, 0) while flow < flow_limit: f = dfs(flow_limit - flow) flow += f if f == 0: break return flow def min_cut(self, s: int) -> List[bool]: visited = [False] * self._n stack = [s] visited[s] = True while stack: v = stack.pop() for e in self._g[v]: if e.cap > 0 and not visited[e.dst]: visited[e.dst] = True stack.append(e.dst) return visited N=int(readline()) A=list(map(int,readline().split())) pow2={1<<i for i in range(30)} cnt=[sum(1 for b in range(30) if a&1<<b) for a in A] MFG=MFGraph(N+2) s=0 t=N+1 for i in range(N): if cnt[i]%2==0: MFG.add_edge(s,i+1,1) else: MFG.add_edge(i+1,t,1) if cnt[i]%2==0: for j in range(N): if cnt[j]%2 and A[i]^A[j] in pow2: MFG.add_edge(i+1,j+1,1) flow=MFG.flow(s,t) ans=N-flow print(ans)