結果

問題 No.2625 Bouns Ai
ユーザー Mao-beta
提出日時 2024-02-27 03:23:58
言語 PyPy3
(7.3.15)
結果
TLE  
実行時間 -
コード長 4,927 bytes
コンパイル時間 255 ms
コンパイル使用メモリ 82,312 KB
実行使用メモリ 511,928 KB
最終ジャッジ日時 2024-09-29 11:53:09
合計ジャッジ時間 4,752 ms
ジャッジサーバーID
(参考情報)
judge4 / judge1
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other TLE * 1 -- * 22
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
import math
import bisect
from heapq import heapify, heappop, heappush
from collections import deque, defaultdict, Counter
from functools import lru_cache
from itertools import accumulate, combinations, permutations, product
sys.setrecursionlimit(1000000)
MOD = 10 ** 9 + 7
MOD99 = 998244353
input = lambda: sys.stdin.readline().strip()
NI = lambda: int(input())
NMI = lambda: map(int, input().split())
NLI = lambda: list(NMI())
SI = lambda: input()
SMI = lambda: input().split()
SLI = lambda: list(SMI())
EI = lambda m: [NLI() for _ in range(m)]
class segtree():
n = 1
size = 1
log = 2
d = [0]
op = None
e = 10 ** 15
def __init__(self, V, OP, E):
self.n = len(V)
self.op = OP
self.e = E
self.log = (self.n - 1).bit_length()
self.size = 1 << self.log
self.d = [E for i in range(2 * self.size)]
for i in range(self.n):
self.d[self.size + i] = V[i]
for i in range(self.size - 1, 0, -1):
self.update(i)
def set(self, p, x):
assert 0 <= p and p < self.n
p += self.size
self.d[p] = x
for i in range(1, self.log + 1):
self.update(p >> i)
def get(self, p):
assert 0 <= p and p < self.n
return self.d[p + self.size]
def prod(self, l, r):
assert 0 <= l and l <= r and r <= self.n
sml = self.e
smr = self.e
l += self.size
r += self.size
while (l < r):
if (l & 1):
sml = self.op(sml, self.d[l])
l += 1
if (r & 1):
smr = self.op(self.d[r - 1], smr)
r -= 1
l >>= 1
r >>= 1
return self.op(sml, smr)
def all_prod(self):
return self.d[1]
def max_right(self, l, f):
"""
0≤l<N l f
f(prod(l,r))=True r
f :
x>l f(prod(l,x))=True
l<y≤x f(prod(l,y))=True f(e)=True
->lprodFalser
"""
assert 0 <= l and l <= self.n
assert f(self.e)
if l == self.n:
return self.n
l += self.size
sm = self.e
while (1):
while (l % 2 == 0):
l >>= 1
if not (f(self.op(sm, self.d[l]))):
while (l < self.size):
l = 2 * l
if f(self.op(sm, self.d[l])):
sm = self.op(sm, self.d[l])
l += 1
return l - self.size
sm = self.op(sm, self.d[l])
l += 1
if (l & -l) == l:
break
return self.n
def min_left(self, r, f):
"""
0≤r<N r f
f(prod(l,r))=True l
f :
x<r f(prod(x,r))=True
x≤y<r f(prod(y,r))=True f(e)=True
->rprodFalsel
"""
assert 0 <= r and r < self.n
assert f(self.e)
if r == 0:
return 0
r += self.size
sm = self.e
while (1):
r -= 1
while (r > 1 & (r % 2)):
r >>= 1
if not (f(self.op(self.d[r], sm))):
while (r < self.size):
r = (2 * r + 1)
if f(self.op(self.d[r], sm)):
sm = self.op(self.d[r], sm)
r -= 1
return r + 1 - self.size
sm = self.op(self.d[r], sm)
if (r & -r) == r:
break
return 0
def update(self, k):
self.d[k] = self.op(self.d[2 * k], self.d[2 * k + 1])
def __str__(self):
return str([self.get(i) for i in range(self.n)])
def main():
N = NI()
A = NLI()
M = 100000
dp = [segtree([0]*(M+1), lambda x, y: (x+y)%MOD99, 0) for _ in range(N+1)]
dp[0].set(0, 1)
for i in range(1, N+1):
for j in range(M+1):
if i == 1:
if j >= A[0]:
dp[i].set(j, 1)
else:
l = 0
r = min(j+1, j+1+A[i-2]-A[i-1])
if l < r:
dp[i].set(j, dp[i-1].prod(l, r))
print(dp[N].all_prod() % MOD99)
if __name__ == "__main__":
main()
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