結果

問題 No.202 1円玉投げ
ユーザー vwxyzvwxyz
提出日時 2023-11-30 14:57:49
言語 Python3
(3.13.1 + numpy 2.2.1 + scipy 1.14.1)
結果
AC  
実行時間 1,057 ms / 5,000 ms
コード長 5,041 bytes
コンパイル時間 191 ms
コンパイル使用メモリ 13,184 KB
実行使用メモリ 51,780 KB
最終ジャッジ日時 2024-09-26 14:04:29
合計ジャッジ時間 17,635 ms
ジャッジサーバーID
(参考情報)
judge3 / judge1
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 #
プレゼンテーションモードにする

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
#import pypyjit
#pypyjit.set_param('max_unroll_recursion=-1')
#sys.set_int_max_str_digits(10**9)
class UnionFind:
def __init__(self,N,label=None,f=None,weighted=False,rollback=False):
self.N=N
self.parents=[None]*self.N
self.size=[1]*self.N
self.roots={i for i in range(self.N)}
self.label=label
if self.label!=None:
self.label=[x for x in label]
self.f=f
self.weighted=weighted
if self.weighted:
self.weight=[0]*self.N
self.rollback=rollback
if self.rollback:
self.operate_list=[]
self.operate_set=[]
def Find(self,x):
stack=[]
while self.parents[x]!=None:
stack.append(x)
x=self.parents[x]
if not self.rollback:
if self.weighted:
w=0
for y in stack[::-1]:
self.parents[y]=x
w+=self.weight[y]
self.weight[y]=w
else:
for y in stack[::-1]:
self.parents[y]=x
return x
def Union(self,x,y,w=None):
root_x=self.Find(x)
root_y=self.Find(y)
if self.rollback:
self.operate_list.append([])
self.operate_set.append([])
if root_x==root_y:
if self.weighted:
if self.weight[y]-self.weight[x]==w:
return True
else:
return False
else:
if self.size[root_x]<self.size[root_y]:
x,y=y,x
root_x,root_y=root_y,root_x
if self.weighted:
w=-w
if self.rollback:
self.operate_list[-1].append((self.parents,root_y,self.parents[root_y]))
self.operate_list[-1].append((self.size,root_x,self.size[root_x]))
self.operate_set[-1].append(root_y)
if self.label!=None:
self.operate_list[-1]((self.label,root_x,self.label[root_x]))
if self.weighted:
self.operate_list[-1].append((self.weight,root_y,self.weight[root_y]))
self.parents[root_y]=root_x
self.size[root_x]+=self.size[root_y]
self.roots.remove(root_y)
if self.label!=None:
self.label[root_x]=self.f(self.label[root_x],self.label[root_y])
if self.weighted:
self.weight[root_y]=w+self.weight[x]-self.weight[y]
def Size(self,x):
return self.size[self.Find(x)]
def Same(self,x,y):
return self.Find(x)==self.Find(y)
def Label(self,x):
return self.label[self.Find(x)]
def Weight(self,x,y):
root_x=self.Find(x)
root_y=self.Find(y)
if root_x!=root_y:
return None
return self.weight[y]-self.weight[x]
def Roots(self):
return list(self.roots)
def Linked_Components_Count(self):
return len(self.roots)
def Linked_Components(self):
linked_components=defaultdict(list)
for x in range(self.N):
linked_components[self.Find(x)].append(x)
return linked_components
def Rollback(self):
assert self.rollback
if self.operate_list:
for lst,x,v in self.operate_list.pop():
lst[x]=v
for x in self.operate_set.pop():
self.roots.add(x)
return True
else:
return False
def __str__(self):
linked_components=defaultdict(list)
for x in range(self.N):
linked_components[self.Find(x)].append(x)
return "\n".join(f"{r}: {linked_components[r]}" for r in sorted(list(linked_components.keys())))
N=int(readline())
XY=defaultdict(list)
ans=0
for n in range(N):
x,y=map(int,readline().split())
i,j=x//20,y//20
for di in range(-1,2):
for dj in range(-1,2):
if (i+di,j+dj) in XY:
for xx,yy in XY[(i+di,j+dj)]:
if (x-xx)**2+(y-yy)**2<20**2:
break
else:
continue
break
else:
continue
break
else:
ans+=1
XY[(x//20,y//20)].append((x,y))
print(ans)
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