結果

問題 No.875 Range Mindex Query
ユーザー 👑 Kazun
提出日時 2021-02-10 16:49:43
言語 PyPy3
(7.3.15)
結果
WA  
実行時間 -
コード長 4,912 bytes
コンパイル時間 163 ms
コンパイル使用メモリ 82,076 KB
実行使用メモリ 104,448 KB
最終ジャッジ日時 2024-07-08 03:12:44
合計ジャッジ時間 3,866 ms
ジャッジサーバーID
(参考情報)
judge5 / judge1
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ファイルパターン 結果
sample AC * 1
other AC * 4 WA * 14
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ソースコード

diff #
プレゼンテーションモードにする

class Segment_Tree():
"""
1-index
"""
def __init__(self,L,calc,unit,index):
"""calcLSegment Tree
calc:(2,)
unit:calc (xe=ex=xe)
index:1index
"""
self.calc=calc
self.unit=unit
self.index=index
N=len(L)
d=max(1,(N-1).bit_length())
k=1<<d
self.data=[unit]*k+L+[unit]*(k-len(L))
self.N=k
self.depth=d
for i in range(k-1,0,-1):
self.data[i]=self.calc(self.data[i<<1],self.data[i<<1|1])
def get(self,k,index=1):
"""k
"""
assert 0<=k-index<self.N,""
return self.data[k-index+self.N]
def update(self,k,x,index=1):
"""kx,.
k:
x:
"""
assert 0<=k-index<self.N,""
m=(k-index)+self.N
self.data[m]=x
while m>1:
m>>=1
self.data[m]=self.calc(self.data[m<<1],self.data[m<<1|1])
def product(self,From,To,index=1,left_closed=True,right_closed=True):
L=(From-index)+self.N+(not left_closed)
R=(To-index)+self.N+(right_closed)
vL=self.unit
vR=self.unit
while L<R:
if L&1:
vL=self.calc(vL,self.data[L])
L+=1
if R&1:
R-=1
vR=self.calc(self.data[R],vR)
L>>=1
R>>=1
return self.calc(vL,vR)
def all_product(self):
return self.data[1]
def max_right(self,left,cond,index=1):
"""2x1.\n
(1) r=left or cond(data[left]*data[left+1]*...*d[right-1]):True
(2) r=N+index or cond(data[left]*data[left+1]*...*data[right]):False
※cond調,cond(data[left]*...*data[right-1])right.
cond:()
cond(unit):True
index<=left<=r<n+index
"""
left-=index
assert 0<=left<=self.N,""
assert cond(self.unit),"."
if left==self.N:
return self.N+index
left+=self.N-(index-1)
sm=self.unit
calc=self.calc
first=True
while first or (left & (-left))!=left:
first=False
while left%2==0:
left>>=1
if not cond(calc(sm,self.data[left])):
while left<self.N:
left<<=1
if cond(self.calc(sm,self.data[left])):
sm=self.calc(sm,self.data[left])
left+=1
return left-self.N+index
sm=self.calc(sm,self.data[left])
left+=1
return self.N+index
def min_left(self,right,cond,index=1):
"""2x1.\n
(1) l=right or cond(data[left]*data[left+1]*...*d[right]):True
(2) l=index or cond(data[left-1]*data[left+1]*...*data[right]):False
※cond調,cond(data[left]*...*data[right-1])right.
cond:()
cond(unit):True
index<=left<=r<n+index
"""
right-=index
assert 0<=right<=self.N,""
assert cond(self.unit),"."
if right==0:
return index
right+=self.N
sm=self.unit
calc=self.calc
first=1
while first or (right & (-right))!=right:
first=0
right-=1
while right>1 and right&1:
right>>=1
if not cond(calc(self.data[right],sm)):
while right<self.N:
right=2*right+1
if cond(calc(self.data[right],sm)):
sm=calc(self.data[right],sm)
right-=1
return right+1-self.N+index
sm=calc(self.data[right],sm)
return index
#================================================
import sys
input=sys.stdin.readline
write=sys.stdout.write
N,Q=map(int,input().split())
A=["*"]+list(map(int,input().split()))
A_inv=[0]*(N+1)
for i,a in enumerate(A[1:],1):
A_inv[a]=i
X=[]
S=Segment_Tree(A[1:],min,N+1,1)
for _ in range(Q):
t,l,r=map(int,input().split())
if t==1:
p,q=A[l],A[r]
A_inv[p],A_inv[q]=r,l
S.update(l,q,1)
S.update(r,p,1)
else:
alpha=S.product(l,r)
X.append(A_inv[alpha])
write("\n".join(map(str,X)))
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