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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#717733 | #9605. 新生舞会 | N_z_ | 50 | 2555ms | 115504kb | C++23 | 2.3kb | 2024-11-06 18:50:22 | 2024-11-06 18:50:23 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
constexpr int lim=6000005;
int rt[2000001],id=0;
int son[2000001],bro[2000001],sz[2000001],fa[2000001];
struct node
{
int ls:25,rs:25,tag:21;
}tr[lim+1];
bitset<lim+1>val;
int fr[lim+1],tl=0;
int newnode()
{
int rt;
if(tl)rt=fr[--tl];
else
{
rt=++id;
}
tr[rt].ls=tr[rt].rs=tr[rt].tag=0;
val[rt]=0;
return rt;
}
void pushdown(int rt,int dep)
{
if(tr[rt].tag)
{
if(tr[rt].tag>>dep&1)
{
int t=tr[rt].ls;
tr[rt].ls=tr[rt].rs;
tr[rt].rs=t;
}
tr[tr[rt].ls].tag^=tr[rt].tag;
tr[tr[rt].rs].tag^=tr[rt].tag;
tr[rt].tag=0;
}
}
void pushup(int rt)
{
val[rt]=val[tr[rt].ls]&val[tr[rt].rs];
}
int insert(int rt,int vv,int dep)
{
if(!rt)rt=newnode();
pushdown(rt,dep);
if(dep<0){val[rt]=1;return rt;}
if(vv>>dep&1)tr[rt].rs=insert(tr[rt].rs,vv,dep-1);
else tr[rt].ls=insert(tr[rt].ls,vv,dep-1);
pushup(rt);
return rt;
}
int merge(int x,int y,int dep)
{
if(!x||!y){x|=y;return x;}
if(dep<0)return x;
pushdown(x,dep);
pushdown(y,dep);
tr[x].ls=merge(tr[x].ls,tr[y].ls,dep-1);
tr[x].rs=merge(tr[x].rs,tr[y].rs,dep-1);
fr[tl++]=y;
pushup(x);
return x;
}
int mex(int rt)
{
int res=0;
for(int x=20;x>=0;x--)
{
pushdown(rt,x);
if(!val[tr[rt].ls])rt=tr[rt].ls;
else rt=tr[rt].rs,res^=1<<x;
}
return res;
}
int sta[2000001],vv[2000001],g[2000001];
int main()
{
cin.tie(0)->sync_with_stdio(0);
int T;
cin>>T;
int ans=0;
while(T--)
{
int n;
cin>>n;
for(int x=1;x<=n;x++)
son[x]=0,rt[x]=0,sz[x]=1,g[x]=0,vv[x]=0;
tl=0;
id=0;
for(int x=2;x<=n;x++)
{
cin>>fa[x];
bro[x]=son[fa[x]];
son[fa[x]]=x;
}
for(int x=n;x>=1;x--)sz[fa[x]]+=sz[x];
int ntl=0;
sta[ntl++]=1;
while(ntl>0)
{
int u=sta[ntl-1];
if(vv[u])
{
rt[u]=insert(rt[u],g[u],20);
int tag=mex(rt[u]);
if(fa[u])
{
tr[rt[u]].tag^=g[fa[u]];
tr[rt[fa[u]]].tag^=tag;
g[fa[u]]^=tag;
rt[fa[u]]=merge(rt[fa[u]],rt[u],20);
}
ntl--;
continue;
}
vv[u]=1;
int mxs=0;
for(int v=son[u];v;v=bro[v])
if(sz[v]>sz[mxs])mxs=v;
for(int v=son[u];v;v=bro[v])
if(v!=mxs)sta[ntl++]=v;
sta[ntl++]=mxs;
}
ans^=mex(rt[1]);
}
cout<<ans<<endl;
}
詳細信息
Subtask #1:
score: 10
Accepted
Test #1:
score: 10
Accepted
time: 4ms
memory: 22144kb
input:
12 13 1 2 1 4 2 5 3 3 2 9 6 4 392 1 2 2 4 4 3 3 6 9 10 9 11 13 14 15 15 17 18 19 20 6 21 23 12 24 26 27 28 29 30 31 32 33 31 34 33 36 9 38 40 41 25 42 44 45 46 47 48 49 50 51 52 53 21 32 52 54 58 59 60 53 61 63 64 65 66 67 68 69 70 4 1 71 74 75 76 77 78 79 80 81 52 82 55 84 86 84 87 89 90 91 92 93 1...
output:
1875
result:
ok 1 number(s): "1875"
Test #2:
score: 10
Accepted
time: 3ms
memory: 22160kb
input:
1 5000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 5 21 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 79 85 87 88 89 90 91 92 93 94 95 96 97 98 99 100 10...
output:
4950
result:
ok 1 number(s): "4950"
Test #3:
score: 10
Accepted
time: 4ms
memory: 24088kb
input:
1 5000 1 1 2 1 2 2 3 4 9 10 9 12 13 10 15 12 14 14 18 20 19 22 19 20 21 24 26 27 25 30 30 32 33 33 33 32 34 35 38 40 39 38 40 43 43 44 43 46 48 50 50 48 50 53 53 52 56 56 57 56 57 60 61 61 61 62 66 65 69 67 71 70 71 73 75 73 73 75 78 80 78 80 82 80 82 84 86 85 89 86 87 92 92 92 95 94 95 95 95 100 10...
output:
3204
result:
ok 1 number(s): "3204"
Subtask #2:
score: 10
Accepted
Test #4:
score: 10
Accepted
time: 2381ms
memory: 53888kb
input:
15 1 5 1 1 3 3 10603 1 2 2 1 5 3 6 3 2 7 6 6 10 5 4 16 4 16 18 4 11 22 8 14 2 26 22 9 10 20 28 26 1 27 8 35 3 4 6 25 14 9 33 44 15 26 28 34 24 18 48 5 33 11 37 32 19 14 41 6 46 60 8 25 62 32 59 27 54 50 62 44 51 18 53 46 42 31 26 11 78 71 40 60 2 13 35 84 34 76 51 88 33 13 88 85 80 70 21 74 54 79 75...
output:
11527
result:
ok 1 number(s): "11527"
Test #5:
score: 10
Accepted
time: 2555ms
memory: 88892kb
input:
1 2000000 1 1 1 4 5 5 3 6 4 1 11 2 11 4 15 11 11 11 1 16 11 15 22 6 7 23 4 5 8 2 27 1 5 3 15 30 30 21 34 28 22 24 25 33 45 13 1 46 27 27 39 15 42 44 38 27 52 39 27 58 36 37 29 34 30 44 29 55 17 60 34 30 61 29 61 13 12 67 70 9 67 40 54 72 14 80 42 27 49 88 12 2 53 8 57 93 74 22 22 85 61 79 89 55 23 1...
output:
16384
result:
ok 1 number(s): "16384"
Subtask #3:
score: 30
Accepted
Dependency #1:
100%
Accepted
Test #6:
score: 30
Accepted
time: 159ms
memory: 28392kb
input:
16 4 1 1 3 9 1 2 3 4 5 6 7 8 58 1 2 2 4 5 6 7 8 9 2 10 12 13 5 8 14 17 4 18 20 21 22 8 10 4 23 27 5 26 21 20 28 26 33 35 36 37 38 22 39 41 42 43 44 34 45 47 3 31 48 51 52 53 54 44 44 21 30 1 2 1 4 5 2 6 8 8 2 11 5 9 13 10 16 17 18 12 10 11 19 12 23 23 3 16 26 29 36 1 1 1 2 2 1 2 3 1 10 6 3 12 3 8 9 ...
output:
20841
result:
ok 1 number(s): "20841"
Test #7:
score: 30
Accepted
time: 135ms
memory: 35092kb
input:
1 200000 1 2 3 4 5 6 7 7 9 10 11 12 13 14 15 13 16 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 99 100...
output:
195053
result:
ok 1 number(s): "195053"
Test #8:
score: 30
Accepted
time: 165ms
memory: 33160kb
input:
1 200000 1 1 2 2 2 4 4 4 6 10 9 10 11 12 13 15 15 18 19 19 19 20 20 22 23 23 23 24 26 27 28 28 29 34 31 35 33 37 35 40 37 39 43 43 43 46 46 48 48 50 48 52 49 50 53 54 54 56 57 56 61 60 59 60 61 65 64 64 65 69 70 72 73 74 72 73 75 78 76 77 80 79 80 81 81 82 86 84 87 90 88 91 93 93 94 94 94 97 95 100 ...
output:
127754
result:
ok 1 number(s): "127754"
Test #9:
score: 30
Accepted
time: 241ms
memory: 32936kb
input:
1 200000 1 2 3 4 1 3 4 4 4 1 3 2 3 3 3 5 2 1 4 5 4 3 5 3 3 2 2 1 1 2 4 2 4 3 3 1 1 2 4 5 5 5 5 2 1 5 3 4 1 5 2 3 4 5 2 3 3 3 1 2 4 2 2 1 1 2 4 1 3 4 1 4 3 4 4 2 1 4 4 5 1 2 1 1 3 2 4 3 3 3 1 2 3 4 3 1 5 5 2 3 2 2 4 2 2 5 2 2 3 5 1 2 2 1 5 5 3 4 2 1 2 5 3 4 5 5 4 5 1 5 3 3 4 3 5 5 4 2 5 5 2 2 3 3 4 2...
output:
10
result:
ok 1 number(s): "10"
Test #10:
score: 30
Accepted
time: 178ms
memory: 29000kb
input:
1 200000 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30 31 31 32 32 33 33 34 34 35 35 36 36 37 37 38 38 39 39 40 40 41 41 42 42 43 43 44 44 45 45 46 46 47 47 48 48 49 49 50 50 51 51 52 ...
output:
66
result:
ok 1 number(s): "66"
Test #11:
score: 30
Accepted
time: 216ms
memory: 29000kb
input:
1 200000 1 2 2 1 5 3 2 7 4 1 5 10 2 3 15 16 13 1 12 13 19 13 19 16 23 9 10 1 23 26 30 7 25 16 25 36 16 27 10 39 40 20 6 5 30 3 46 41 35 30 24 28 28 8 38 25 32 38 29 21 56 17 24 38 5 7 62 58 13 8 11 45 47 55 55 12 64 8 55 7 5 31 73 20 85 83 44 74 58 65 57 66 27 47 66 56 90 39 96 15 37 14 30 61 96 73 ...
output:
8192
result:
ok 1 number(s): "8192"
Test #12:
score: 30
Accepted
time: 131ms
memory: 33084kb
input:
1 200000 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 25 62 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 99 100...
output:
199948
result:
ok 1 number(s): "199948"
Subtask #4:
score: 0
Memory Limit Exceeded
Dependency #1:
100%
Accepted
Dependency #2:
100%
Accepted
Dependency #3:
100%
Accepted
Test #13:
score: 50
Accepted
time: 2185ms
memory: 86512kb
input:
13 397 1 2 3 1 4 4 6 2 8 10 11 12 13 5 14 16 17 18 19 20 17 21 7 23 25 26 18 16 22 11 27 18 28 32 35 36 17 37 39 40 28 17 41 23 44 16 13 13 46 50 51 16 16 52 55 56 21 57 59 38 28 9 18 60 65 22 66 68 69 70 71 72 73 9 74 76 77 78 79 80 81 25 82 84 25 85 87 88 51 89 91 87 92 94 95 42 96 98 59 99 101 10...
output:
523799
result:
ok 1 number(s): "523799"
Test #14:
score: 50
Accepted
time: 1381ms
memory: 115504kb
input:
1 2000000 1 1 2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 5 21 23 24 25 26 27 28 29 30 31 32 33 19 34 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 44 62 64 65 63 66 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 14 20 88 91 92 93 94 95 96 97 98 99 100...
output:
1949728
result:
ok 1 number(s): "1949728"
Test #15:
score: 0
Memory Limit Exceeded
input:
1 2000000 1 2 1 4 3 4 5 6 6 10 11 8 9 10 11 13 16 15 18 16 19 19 22 20 23 23 24 28 28 30 29 28 30 33 33 35 33 34 37 36 37 39 41 42 41 44 44 47 45 47 50 49 49 52 53 52 54 55 56 60 60 60 60 62 64 63 64 68 66 67 70 70 71 72 73 74 76 74 79 79 78 82 80 80 83 86 84 86 85 87 88 90 91 93 94 93 94 95 96 97 9...
output:
1283040