結果

問題 No.2696 Sign Creation
ユーザー flygon
提出日時 2024-03-22 22:55:36
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 541 ms / 2,500 ms
コード長 2,507 bytes
コンパイル時間 240 ms
コンパイル使用メモリ 82,380 KB
実行使用メモリ 82,856 KB
最終ジャッジ日時 2024-12-20 12:20:38
合計ジャッジ時間 9,394 ms
ジャッジサーバーID
(参考情報)
judge2 / judge4
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 38
権限があれば一括ダウンロードができます

ソースコード

diff #

import sys
sys.setrecursionlimit(5*10**5)
input = sys.stdin.readline
from collections import defaultdict, deque, Counter
from heapq import heappop, heappush
from bisect import bisect_left, bisect_right
from math import gcd
from collections import defaultdict


class UnionFind:
    def __init__(self, n):
        self.n = n
        self.p = [-1] * (n+1)

    def find(self, x):
        if self.p[x] < 0:
            return x
        else:
            self.p[x] = self.find(self.p[x])
            return self.p[x]

    def union(self, x, y):
        x = self.find(x)
        y = self.find(y)
        if x == y:
            return
        if self.p[x] > self.p[y]:
            x, y = y, x
        self.p[x] += self.p[y]
        self.p[y] = x

    def same(self, a, b):
        return self.find(a) == self.find(b)

    def group(self):
        d = defaultdict(list)
        for i in range(1, self.n+1):
            par = self.find(i)
            d[par].append(i)
        return d

h,w,n,d = map(int,input().split())
g = [[-1]*w for i in range(h)]

now = 1
for i in range(n):
    n,m = map(int,input().split())
    g[n-1][m-1] = i

uf = UnionFind(h*w+1)
for i in range(h):
    for j in range(w):
        if g[i][j] == -1: continue
        for x in range(i-d,i+d+1):
            for y in range(j-d, j+d+1):
                if not (0<=x<h and 0<=y<w): continue
                if g[x][y] == -1: continue
                if(abs(x-i) + abs(y-j)) > d:continue
                uf.union(x*w+y, i*w+j)

cnt = [0]*(h*w)
s = set()
for i in range(h):
    for j in range(w):
        if g[i][j] == -1: continue
        g[i][j] = uf.find(i*w+j)
        s.add(uf.find(i*w+j))
        cnt[uf.find(i*w+j)] += 1

tot = len(s) - cnt.count(1)
mn = tot
mx = tot
for i in range(h):
    for j in range(w):
        if g[i][j] != -1: continue
        two = 0
        one = 0
        wa = set()
        for x in range(i-d,i+d+1):
            for y in range(j-d, j+d+1):
                if not (0<=x<h and 0<=y<w): continue
                if g[x][y] == -1: continue
                if g[x][y] in wa: continue
                if(abs(x-i) + abs(y-j)) > d:continue
                wa.add(g[x][y])
                if cnt[g[x][y]] == 1:
                    one += 1
                else:
                    two += 1
        tmp = tot
        if two >= 1:
            tmp -= two-1
        else:
            if one:
                tmp += 1                    
        mn = min(tmp, mn)
        mx = max(tmp, mx)
print(mn,mx)
                
0