結果
問題 | No.1479 Matrix Eraser |
ユーザー | tcltk |
提出日時 | 2021-06-28 02:43:14 |
言語 | PyPy3 (7.3.15) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,039 bytes |
コンパイル時間 | 257 ms |
コンパイル使用メモリ | 82,688 KB |
実行使用メモリ | 97,920 KB |
最終ジャッジ日時 | 2024-06-25 11:58:05 |
合計ジャッジ時間 | 7,448 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 | 137 ms
92,544 KB |
testcase_01 | AC | 139 ms
87,040 KB |
testcase_02 | WA | - |
testcase_03 | AC | 146 ms
88,576 KB |
testcase_04 | AC | 146 ms
88,452 KB |
testcase_05 | AC | 139 ms
87,168 KB |
testcase_06 | AC | 146 ms
88,888 KB |
testcase_07 | TLE | - |
testcase_08 | -- | - |
testcase_09 | -- | - |
testcase_10 | -- | - |
testcase_11 | -- | - |
testcase_12 | -- | - |
testcase_13 | -- | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
testcase_17 | -- | - |
testcase_18 | -- | - |
testcase_19 | -- | - |
testcase_20 | -- | - |
testcase_21 | -- | - |
testcase_22 | -- | - |
testcase_23 | -- | - |
testcase_24 | -- | - |
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 | -- | - |
testcase_39 | -- | - |
testcase_40 | -- | - |
ソースコード
#!/usr/bin/env python3 # from typing import * import sys import io import math import collections import decimal import itertools import bisect import heapq def input(): return sys.stdin.readline()[:-1] sys.setrecursionlimit(1000000) # _INPUT = """3 3 # 2 0 3 # 0 3 3 # 1 1 1 # """ # sys.stdin = io.StringIO(_INPUT) class Dinic: def __init__(self, n): self.n = n self.links = [[] for _ in range(n)] self.depth = None self.progress = None def add_link(self, _from, to, cap): self.links[_from].append([cap, to, len(self.links[to])]) self.links[to].append([0, _from, len(self.links[_from]) - 1]) def bfs(self, s): depth = [-1] * self.n depth[s] = 0 q = collections.deque([s]) while q: v = q.popleft() for cap, to, rev in self.links[v]: if cap > 0 and depth[to] < 0: depth[to] = depth[v] + 1 q.append(to) self.depth = depth def dfs(self, v, t, flow): if v == t: return flow links_v = self.links[v] for i in range(self.progress[v], len(links_v)): self.progress[v] = i cap, to, rev = link = links_v[i] if cap == 0 or self.depth[v] >= self.depth[to]: continue d = self.dfs(to, t, min(flow, cap)) if d == 0: continue link[0] -= d self.links[to][rev][0] += d return d return 0 def max_flow(self, s, t): flow = 0 while True: self.bfs(s) if self.depth[t] < 0: return flow self.progress = [0] * self.n current_flow = self.dfs(s, t, INF) while current_flow > 0: flow += current_flow current_flow = self.dfs(s, t, INF) INF = 10**10 def solve(Points): h_list = sorted(list(set(h for (h, w) in Points))) w_list = sorted(list(set(w for (h, w) in Points))) h_dic = {a: i for i, a in enumerate(h_list)} w_dic = {a: i for i, a in enumerate(w_list)} h_count = len(h_list) w_count = len(w_list) mf = Dinic(h_count+w_count+2) for i in range(h_count): mf.add_link(0, i+1, 1) for j in range(w_count): mf.add_link(j+h_count, h_count+w_count+1, 1) for h, w in Points: h1 = h_dic[h] w1 = w_dic[w] mf.add_link(h1+1, w1+h_count, INF) return mf.max_flow(0, h_count+w_count+1) H, W = map(int, input().split()) A = [list(map(int, input().split())) for _ in range(H)] n = 0 Done = [[(A[h][w] == 0) for w in range(W)] for h in range(H)] for h in range(H): for w in range(W): if Done[h][w]: continue a = A[h][w] Points = [] for h1 in range(H): for w1 in range(W): if A[h1][w1] == a: Points.append((h1, w1)) Done[h1][w1] = True n += solve(Points) print(n)