QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#340509 | #4387. Static Query on Tree | crsfaa# | AC ✓ | 82ms | 65752kb | C++14 | 4.0kb | 2024-02-29 09:26:41 | 2024-02-29 09:26:41 |
Judging History
answer
#include<bits/stdc++.h>
#define Yukinoshita namespace
#define Yukino std
using Yukinoshita Yukino;
int read()
{
int s=0;
char ch=getchar();
while(ch<'0'||ch>'9') ch=getchar();
while(ch>='0'&&ch<='9') s=s*10+ch-'0',ch=getchar();
return s;
}
const int mxn=6e5+5;
struct node
{
int x,nxt;
}a[mxn*2];
int head[mxn];
int cnt;
void add(int x,int y)
{
a[++cnt].x=y;
a[cnt].nxt=head[x];
head[x]=cnt;
}
int f[mxn];
int dcnt;
#define pr pair<int,int>
struct Word_RMQ
{
#define w 32
#define u unsigned
#define be(x) ((x>>5)+1)
#define l(x) ((x-1<<5)+(x==1))
#define r(x) min(N,((x<<5)-1))
#define bm mxn/w+5
int N;
pr *a;
pr ST[int(log2(bm)+1)][bm];
pr pre[mxn],nxt[mxn];
struct node
{
u st[w+1];
pr *p;
inline pr ask(int l,int r)
{
return p[l+__builtin_ctz(st[r]>>l-1)];
}
void init(pr *p_,int len)
{
p=p_;
int i,top=0;
int stack[w+1];
for(i=1;i<=len;i++)
{
st[i]=st[i-1];
while(top&&p[i]<p[stack[top]])
st[i]-=1u<<stack[top--]-1;
stack[++top]=i,st[i]+=1u<<i-1;
}
}
}k[bm];
void build(pr A[],int n)
{
a=A,N=n;
int i,j,cnt=0;
for(i=1;;i++)
{
k[i].init(a+l(i)-1,r(i)-l(i)+1);
for(j=l(i)+1,pre[l(i)]=a[l(i)];j<=r(i);j++)
pre[j]=min(pre[j-1],a[j]);
for(j=r(i)-1,nxt[r(i)]=a[r(i)];j>=l(i);j--)
nxt[j]=min(nxt[j+1],a[j]);
ST[0][i]=pre[r(i)];
cnt++;
if(r(i)==n) break;
}
for(j=1;(1<<j)<=cnt;j++)
for(i=1;i+(1<<j)-1<=cnt;i++)
ST[j][i]=min(ST[j-1][i],ST[j-1][i+(1<<(j-1))]);
}
inline pr STask(int L,int R)
{
if(L>R) return make_pair(INT_MAX,INT_MAX);
int k=__lg(R-L+1);
return min(ST[k][L],ST[k][R-(1<<k)+1]);
}
inline pr ask(int L,int R)
{
if(L>R) return make_pair(INT_MAX,INT_MAX);
if(be(L)==be(R)) return k[be(L)].ask(L-l(be(L))+1,R-l(be(L))+1);
return min({STask(be(L)+1,be(R)-1),pre[R],nxt[L]});
}
#undef w
#undef l
#undef r
}ds;
pr st[mxn];
int dep[mxn];
void dfs(int d,int deep,int fa)
{
st[dcnt]=make_pair(dep[d]=deep,fa),f[d]=++dcnt;
for(int i=head[d];i;i=a[i].nxt)
if(!f[a[i].x])
dfs(a[i].x,deep+1,d);
}
int asklca(int l,int r)
{
if(l==r) return l;
l=f[l],r=f[r];
if(l>r) swap(l,r);
return ds.ask(l,r-1).second;
}
int ca[mxn],cb[mxn],cc[mxn];
int ht[mxn],fa[mxn];
vector<int> h[mxn];
int sum;
bool cmp(int x,int y)
{
return f[x]<f[y];
}
void dfs(int d,int s)
{
s+=cc[d];
for(auto i:h[d])
dfs(i,s),ca[d]+=ca[i],cb[d]+=cb[i];
if(ca[d]&&cb[d])
sum+=!!s+(dep[d]-dep[fa[d]]-1)*!!(s-cc[d]);
}
int main()
{
int T=read();
while(T--)
{
int n=read(),m=read(),x,i;
cnt=dcnt=0;
memset(head,0,n+1<<2);
for(i=2;i<=n;i++)
add(read(),i);
dfs(1,1,0);
ds.build(st,n);
while(m--)
{
int sz1=read(),sz2=read(),sz3=read(),cnt=0;
ht[++cnt]=1;
while(sz1--)
x=ht[++cnt]=read(),ca[x]=1;
while(sz2--)
x=ht[++cnt]=read(),cb[x]=1;
while(sz3--)
x=ht[++cnt]=read(),cc[x]=1;
sort(ht+1,ht+1+cnt,cmp);
cnt=unique(ht+1,ht+1+cnt)-ht-1;
for(i=cnt;i>1;i--)
ht[++cnt]=asklca(ht[i],ht[i-1]);
sort(ht+1,ht+1+cnt,cmp);
cnt=unique(ht+1,ht+1+cnt)-ht-1;
for(i=2;i<=cnt;i++)
h[fa[ht[i]]=asklca(ht[i],ht[i-1])].push_back(ht[i]);
sum=0,dfs(1,0);
printf("%d\n",sum);
for(i=1;i<=cnt;i++)
h[ht[i]].clear(),ca[ht[i]]=cb[ht[i]]=cc[ht[i]]=0;
}
}
}
/*
2
7 3
1 1 2 2 3 3
2 1 1
1 2
4
1
4 4 3
4 5 6 7
4 5 6 7
2 4 6
2 1 1
4 5
6
1
7 3
1 1 2 2 3 3
2 1 1
1 2
4
1
4 4 3
4 5 6 7
4 5 6 7
2 4 6
2 1 1
4 5
6
1
*/
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 82ms
memory: 65752kb
input:
1 200000 18309 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 ...
output:
102147 62590 87270 88880 7654 61542 62953 85022 55135 54125 70500 64356 25824 88300 42278 15336 18132 28734 90282 42889 28099 31311 96842 19959 34366 60205 78358 91142 56048 74688 86091 51979 94750 11989 89544 86860 56720 29534 52343 90031 79002 90293 94554 48340 65015 9181 15016 19884 49445 14181 6...
result:
ok 18309 numbers