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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
#640309	#8551. DFS Order 5	lvkaiyi0811	WA	173ms	11888kb	C++20	1000b	2024-10-14 10:52:21	2024-10-14 10:52:23

Judging History

你现在查看的是最新测评结果

[2024-10-14 10:52:23]
评测

测评结果：WA
用时：173ms
内存：11888kb

查看

[2024-10-14 10:52:21]
提交

answer

#include<bits/stdc++.h>
#define eb emplace_back
using namespace std;
typedef long long ll;
const ll _=1e5+5;
ll n,m,q,x,y,t,b[_],c[_],dfn[_],sz[_],dep[_],d[18][_],e[_],i,j;bool f[_];vector<ll>E[_];
inline void p1(ll x,ll fa){
	d[0][t]=e[x]=fa;dfn[x]=++t;sz[x]=1;
	for(ll y:E[x])if(y!=fa)dep[y]=dep[x]+1,p1(y,x),sz[x]+=sz[y];
}
inline ll p2(ll x,ll y){return dep[x]<dep[y]?x:y;}
inline ll p3(ll x,ll y){
	if(x==y)return x;x=dfn[x];y=dfn[y];if(x>y)swap(x,y);
	ll t=__lg(y-x);return p2(d[t][x],d[t][y-(1<<t)]);
}
int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>n>>q;
	for(i=1;i<n;i++)cin>>x>>y,E[x].eb(y),E[y].eb(x);
	p1(1,0);
	for(i=1;i<18;i++)for(j=1;j<=n-(1<<i);j++)
		d[i][j]=p2(d[i-1][j],d[i-1][j+(1<<(i-1))]);
	while(q--){
		cin>>m>>x;t=1;b[1]=x;c[1]=0;
		memset(f,0,sizeof(f));
		for(i=1;i<m;i++){
			cin>>y;
			if(p3(x,y)!=e[y])break;
			for(;t&&dep[b[t]]>=dep[x];t--)if(i<c[t]+sz[b[t]])break;
			b[++t]=x=y;c[t]=i;
		}
		cout<<(i<m?"No\n":"Yes\n");
		while(++i<m)cin>>y;
	}
}

源文件, 语言: C++20

詳細信息

Test #1:

score: 100

Accepted

time: 0ms

memory: 11800kb

input:

6 7
1 2
1 3
2 4
3 5
2 6
2 4 1
2 4 2
2 4 3
2 4 4
2 4 5
2 4 6
6 1 2 6 4 3 5

output:

No
No
Yes
No
No
Yes
Yes

result:

ok 7 tokens

Test #2:

score: -100

Wrong Answer

time: 173ms

memory: 11888kb

input:

10 100000
7 2
1 7
7 10
8 6
8 7
1 3
4 5
9 5
5 8
8 8 9 7 2 8 1 6 1
4 8 3 5 2
6 7 10 3 9 9 1
1 1
8 10 3 2 9 3 8 7 3
7 5 6 2 8 5 9 1
6 3 4 6 2 1 3
5 8 9 2 4 9
1 3
2 1 5
5 8 5 1 7 9
10 5 2 9 2 6 4 10 6 3 8
3 4 5 8
2 8 4
9 4 10 1 2 4 3 3 6 3
1 3
6 1 1 6 8 3 1
3 7 3 2
3 9 1 5
4 3 7 8 10
9 4 2 3 10 2 5 4 3 ...

output:

No
No
No
Yes
No
No
No
No
Yes
No
No
No
No
No
No
Yes
No
No
No
Yes
No
No
No
No
No
No
No
No
No
Yes
No
Yes
No
No
No
No
No
No
Yes
No
No
No
No
No
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
Yes
Yes
No
No
No
No
Yes
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
N...

result:

wrong answer 20th words differ - expected: 'No', found: 'Yes'