結果

問題 No.2242 Cities and Teleporters
ユーザー vwxyzvwxyz
提出日時 2023-03-31 10:33:21
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 2,572 ms / 3,000 ms
コード長 7,774 bytes
コンパイル時間 267 ms
コンパイル使用メモリ 82,564 KB
実行使用メモリ 229,584 KB
最終ジャッジ日時 2024-09-22 15:51:59
合計ジャッジ時間 36,578 ms
ジャッジサーバーID
（参考情報） 		judge4 / judge2
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 40 ms
53,888 KB
testcase_01 AC 40 ms
54,144 KB
testcase_02 AC 40 ms
54,016 KB
testcase_03 AC 39 ms
54,144 KB
testcase_04 AC 40 ms
54,144 KB
testcase_05 AC 2,198 ms
229,544 KB
testcase_06 AC 1,173 ms
223,820 KB
testcase_07 AC 2,153 ms
227,944 KB
testcase_08 AC 2,470 ms
227,796 KB
testcase_09 AC 2,572 ms
226,788 KB
testcase_10 AC 1,740 ms
227,692 KB
testcase_11 AC 1,167 ms
227,820 KB
testcase_12 AC 1,167 ms
229,096 KB
testcase_13 AC 1,369 ms
227,420 KB
testcase_14 AC 1,591 ms
227,176 KB
testcase_15 AC 1,355 ms
228,204 KB
testcase_16 AC 1,528 ms
228,584 KB
testcase_17 AC 1,864 ms
227,428 KB
testcase_18 AC 1,371 ms
225,260 KB
testcase_19 AC 1,421 ms
225,968 KB
testcase_20 AC 1,377 ms
221,808 KB
testcase_21 AC 1,301 ms
222,768 KB
testcase_22 AC 1,219 ms
221,844 KB
testcase_23 AC 1,280 ms
229,584 KB
testcase_24 AC 1,163 ms
227,316 KB
testcase_25 AC 1,173 ms
228,708 KB
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 # 

import sys
readline=sys.stdin.readline
import bisect

class Segment_Tree:
    def __init__(self,N,f,e,lst=None,dynamic=False):
        self.f=f
        self.e=e
        self.N=N
        if dynamic:
            self.segment_tree=defaultdict(lambda:self.e)
        else:
            if lst==None:
                self.segment_tree=[self.e]*2*self.N
            else:
                assert len(lst)<=self.N
                self.segment_tree=[self.e]*self.N+[x for x in lst]+[self.e]*(N-len(lst))
                for i in range(self.N-1,0,-1):
                    self.segment_tree[i]=self.f(self.segment_tree[i<<1],self.segment_tree[i<<1|1])

    def __getitem__(self,i):
        if type(i)==int:
            if -self.N<=i<0:
                return self.segment_tree[i+self.N*2]
            elif 0<=i<self.N:
                return self.segment_tree[i+self.N]
            else:
                raise IndexError("list index out of range")
        else:
            a,b,c=i.start,i.stop,i.step
            if a==None:
                a=self.N
            else:
                a+=self.N
            if b==None:
                b=self.N*2
            else:
                b+=self.N
            return self.segment_tree[slice(a,b,c)]

    def __setitem__(self,i,x):
        if -self.N<=i<0:
            i+=self.N*2
        elif 0<=i<self.N:
            i+=self.N
        else:
            raise IndexError("list index out of range")
        self.segment_tree[i]=x
        while i>1:
            i>>= 1
            self.segment_tree[i]=self.f(self.segment_tree[i<<1],self.segment_tree[i<<1|1])

    def Build(self,lst):
        for i,x in enumerate(lst,self.N):
            self.segment_tree[i]=x
        for i in range(self.N-1,0,-1):
            self.segment_tree[i]=self.f(self.segment_tree[i<<1],self.segment_tree[i<<1|1])

    def Fold(self,L=None,R=None):
        if L==None:
            L=self.N
        else:
            L+=self.N
        if R==None:
            R=self.N*2
        else:
            R+=self.N
        vL=self.e
        vR=self.e
        while L<R:
            if L&1:
                vL=self.f(vL,self.segment_tree[L])
                L+=1
            if R&1:
                R-=1
                vR=self.f(self.segment_tree[R],vR)
            L>>=1
            R>>=1
        return self.f(vL,vR)

    def Fold_Index(self,L=None,R=None):
        if L==None:
            L=self.N
        else:
            L+=self.N
        if R==None:
            R=self.N*2
        else:
            R+=self.N
        if L==R:
            return None
        x=self.Fold(L-self.N,R-self.N)
        while L<R:
            if L&1:
                if self.segment_tree[L]==x:
                    i=L
                    break
                L+=1
            if R&1:
                R-=1
                if self.segment_tree[R]==x:
                    i=R
                    break
            L>>=1
            R>>=1
        while i<self.N:
            if self.segment_tree[i]==self.segment_tree[i<<1]:
                i<<=1
            else:
                i<<=1
                i|=1
        i-=self.N
        return i

    def Bisect_Right(self,L=None,f=None):
        if L==self.N:
            return self.N
        if L==None:
            L=0
        L+=self.N
        vl=self.e
        vr=self.e
        l,r=L,self.N*2
        while l<r:
            if l&1:
                vl=self.f(vl,self.segment_tree[l])
                l+=1
            if r&1:
                r-=1
                vr=self.f(self.segment_tree[r],vr)
            l>>=1
            r>>=1
        if f(self.f(vl,vr)):
            return self.N
        v=self.e
        while True:
            while L%2==0:
                L>>=1
            vv=self.f(v,self.segment_tree[L])
            if f(vv):
                v=vv
                L+=1
            else:
                while L<self.N:
                    L<<=1
                    vv=self.f(v,self.segment_tree[L])
                    if f(vv):
                        v=vv
                        L+=1
                return L-self.N

    def Bisect_Left(self,R=None,f=None):
        if R==0:
            return 0
        if R==None:
            R=self.N
        R+=self.N
        vl=self.e
        vr=self.e
        l,r=self.N,R
        while l<r:
            if l&1:
                vl=self.f(vl,self.segment_tree[l])
                l+=1
            if r&1:
                r-=1
                vr=self.f(self.segment_tree[r],vr)
            l>>=1
            r>>=1
        if f(self.f(vl,vr)):
            return 0
        v=self.e
        while True:
            R-=1
            while R>1 and R%2:
                R>>=1
            vv=self.f(self.segment_tree[R],v)
            if f(vv):
                v=vv
            else:
                while R<self.N:
                    R=2*R+1
                    vv=self.f(self.segment_tree[R],v)
                    if f(vv):
                        v=vv
                        R-=1
                return R+1-self.N

    def __str__(self):
        return "["+", ".join(map(str,self.segment_tree[self.N:]))+"]"
class Path_Doubling:
    def __init__(self,N,permutation,lst=None,f=None,e=None):
        self.N=N
        self.permutation=permutation
        self.lst=lst
        self.f=f
        self.e=e

    def Build_Next(self,K=None):
        if K==None:
            self.K=self.N
        else:
            self.K=K
        self.k=self.K.bit_length()
        self.permutation_doubling=[[self.permutation[n]] for n in range(self.N)]
        if self.lst!=None:
            self.doubling=[[self.lst[n]] for n in range(self.N)]
        for k in range(1,self.k):
            for n in range(self.N):
                if self.permutation_doubling[n][k-1]==None:
                    self.permutation_doubling[n].append(None)
                    if self.f!=None:
                        self.doubling[n].append(None)
                if self.permutation_doubling[n][k-1]!=None:
                    self.permutation_doubling[n].append(self.permutation_doubling[self.permutation_doubling[n][k-1]][k-1])
                    if self.f!=None:
                        self.doubling[n].append(self.f(self.doubling[n][k-1],self.doubling[self.permutation_doubling[n][k-1]][k-1]))

    def Permutation_Doubling(self,N,K):
        if K<0 or 1<<self.k<=K:
            return None
        for k in range(self.k):
            if K>>k&1 and N!=None:
                N=self.permutation_doubling[N][k]
        return N

    def Doubling(self,N,K):
        if K<0:
            return self.e
        retu=self.e
        for k in range(self.k):
            if K>>k&1:
                if self.permutation_doubling[N][k]==None:
                    return None
                retu=self.f(retu,self.doubling[N][k])
                N=self.permutation_doubling[N][k]
        return retu

    def Bisect(self,x,is_ok):
        if not is_ok(x):
            return -1,None
        K=0
        for k in range(self.k-1,-1,-1):
            if K|1<<k<=self.K and is_ok(self.permutation_doubling[x][k]):
                K|=1<<k
                x=self.permutation_doubling[x][k]
        return K,x

N=int(readline())
H=list(map(int,readline().split()))
T=list(map(int,readline().split()))
sorted_H=sorted(H)
idx=sorted([i for i in range(N)],key=lambda i:H[i])
inf=1<<30
ST=Segment_Tree(N,max,-inf,[T[i] for i in idx])
perm=[None]*N
for i in range(N):
    j=ST.Fold_Index(0,bisect.bisect_right(sorted_H,T[i]))
    if j==None or T[i]>T[idx[j]]:
        j=i
    else:
        j=idx[j]
    perm[i]=j
PD=Path_Doubling(N,perm)
PD.Build_Next()
Q=int(readline())
for q in range(Q):
    A,B=map(int,readline().split())
    A-=1;B-=1
    ans,_=PD.Bisect(A,lambda x:T[x]<H[B])
    if ans==N:
        ans=-1
    else:
        ans+=2
    print(ans)
0