結果

問題 No.318 学学学学学
ユーザー brthyyjp
提出日時 2021-12-28 16:07:55
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 523 ms / 2,000 ms
コード長 3,210 bytes
コンパイル時間 1,094 ms
コンパイル使用メモリ 82,456 KB
実行使用メモリ 130,024 KB
最終ジャッジ日時 2024-10-02 08:43:23
合計ジャッジ時間 10,086 ms
ジャッジサーバーID
(参考情報)
judge5 / 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 * 26
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

class LazySegTree:
# RMQ and RUQ
def __init__(self, init_val, seg_ide, lazy_ide, segfunc):
self.n = len(init_val)
self.num = 2**(self.n-1).bit_length()
self.seg_ide = seg_ide
self.lazy_ide = lazy_ide
self.segfunc = segfunc
# seg, lazy: 1-indexed
self.seg = [seg_ide]*2*self.num
for i in range(self.n):
self.seg[i+self.num] = init_val[i]
for i in range(self.num-1, 0, -1):
self.seg[i] = self.segfunc(self.seg[2*i], self.seg[2*i+1])
self.lazy = [lazy_ide]*2*self.num
def gindex(self, l, r):
# l, r: 1-indexed
L = l + self.num
R = r + self.num
lm = (L // (L & -L)) >> 1
rm = (R // (R & -R)) >> 1
while L < R:
if R <= rm:
yield R
if L <= lm:
yield L
L = L >> 1
R = R >> 1
while L:
yield L
L = L >> 1
def propagate(self, *ids):
# ids: 1-indexed
for i in reversed(ids):
v = self.lazy[i]
if v is None:
continue
self.lazy[2*i] = self.lazy[2*i+1] = self.seg[2*i] = self.seg[2*i+1] = v
self.lazy[i] = None
def update(self, l, r, x):
# l, r: 0-indexed
# change x to [l, r)
*ids, = self.gindex(l, r)
self.propagate(*ids)
L = l + self.num
R = r + self.num
while L < R:
if R & 1:
R -= 1
self.lazy[R] = self.seg[R] = x
if L & 1:
self.lazy[L] = self.seg[L] = x
L += 1
L = L >> 1
R = R >> 1
for i in ids:
# i: 1-indexed
self.seg[i] = self.segfunc(self.seg[2*i], self.seg[2*i+1])
def query(self, l, r):
# l, r: 0-indexed
# query for [l, r)
if r <= l:
return self.seg_ide
self.propagate(*self.gindex(l, r))
L = l + self.num
R = r + self.num
res = self.seg_ide
while L < R:
if R & 1:
R -= 1
res = self.segfunc(res, self.seg[R])
if L & 1:
res = self.segfunc(self.seg[L], res)
L += 1
L = L >> 1
R = R >> 1
return res
def __str__(self): # for debug
arr = [self.query(i,i+1) for i in range(self.n)]
return str(arr)
import sys
import io, os
input = io.BytesIO(os.read(0,os.fstat(0).st_size)).readline
def main():
n = int(input())
A = list(map(int, input().split()))
X = set(A)
X = list(X)
X.sort()
toid = {}
for i, x in enumerate(X):
toid[x] = i
A = [toid[a] for a in A]
N = len(X)
I = [[] for i in range(N)]
for i, a in enumerate(A):
I[a].append(i)
seg = LazySegTree([-1]*n, -1, None, max)
for t in range(N):
if not I[t]:
continue
l = I[t][0]
r = I[t][-1]
seg.update(l, r+1, t)
ans = [0]*n
for i in range(n):
j = seg.query(i, i+1)
ans[i] = X[j]
print(*ans)
if __name__ == '__main__':
main()
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