結果

問題 No.1054 Union add query
ユーザー Kiri8128Kiri8128
提出日時 2020-05-15 22:43:00
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 895 ms / 2,000 ms
コード長 1,733 bytes
コンパイル時間 766 ms
コンパイル使用メモリ 82,308 KB
実行使用メモリ 211,524 KB
最終ジャッジ日時 2024-09-19 11:54:39
合計ジャッジ時間 7,277 ms
ジャッジサーバーID
(参考情報)
judge4 / judge5
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ファイルパターン 結果
sample AC * 3
other AC * 8
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 sys
input = lambda: sys.stdin.readline().rstrip()
N, Q = map(int, input().split())
P = [-1 for i in range(N)]
LA = [i for i in range(N)]
NE = [-1] * N
def par(a):
L = []
while P[a] >= 0:
L.append(a)
a = P[a]
for l in L:
P[l] = a
return a
def unite(a, b):
if par(a) != par(b):
if P[par(b)] >= P[par(a)]:
if P[par(b)] == P[par(a)]: P[par(a)] -= 1
NE[LA[par(a)]] = par(b)
LA[par(a)] = LA[par(b)]
P[par(b)] = par(a)
else:
NE[LA[par(b)]] = par(a)
LA[par(b)] = LA[par(a)]
P[par(a)] = par(b)
X = []
for _ in range(Q):
t, a, b = map(int, input().split())
X.append((t, a, b))
for t, a, b in X:
if t == 1:
a, b = a-1, b-1
unite(a, b)
DONE = [0] * N
ID = [-1] * N
IDI = [-1] * N
c = 0
for i in range(N):
if DONE[i]: continue
a = par(i)
ID[a] = c
IDI[c] = a
DONE[a] = 1
c += 1
while NE[a] >= 0:
a = NE[a]
ID[a] = c
IDI[c] = a
DONE[a] = 1
c += 1
NN = 19
BIT=[0]*(2**NN+1)
def addrange(l0, r0, x=1):
l, r = l0, r0
while l <= 2**NN:
BIT[l] += x
l += l & (-l)
while r <= 2**NN:
BIT[r] -= x
r += r & (-r)
def getvalue(r):
a = 0
while r != 0:
a += BIT[r]
r -= r&(-r)
return a
P = [-1 for i in range(N)]
LA = [i for i in range(N)]
NE = [-1] * N
ANS = []
for t, a, b in X:
if t == 1:
a, b = a-1, b-1
unite(a, b)
elif t == 2:
a -= 1
a = par(a)
addrange(ID[a] + 1, ID[LA[a]] + 2, b)
else:
a -= 1
ANS.append(getvalue(ID[a] + 1))
print("\n".join(map(str, ANS)))
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