QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#434757#8782. Schoolgirlsucup-team1004#WA 3ms6140kbC++141.2kb2024-06-08 17:15:172024-06-08 17:15:19

Judging History

This is the latest submission verdict.

  • [2024-06-14 13:48:47]
  • hack成功,自动添加数据
  • (/hack/679)
  • [2024-06-14 13:05:18]
  • hack成功,自动添加数据
  • (/hack/678)
  • [2024-06-14 12:22:35]
  • hack成功,自动添加数据
  • (/hack/676)
  • [2024-06-08 17:15:19]
  • Judged
  • Verdict: WA
  • Time: 3ms
  • Memory: 6140kb
  • [2024-06-08 17:15:17]
  • Submitted

answer

#include<bits/stdc++.h>
using namespace std;
typedef long double ld;
const int N=1e5+10;
const ld PI=acos(ld(-1));
ld sq(ld x){return x*x;}
struct point{
	ld x,y;
}p[N],a[N];
point operator +(point a,point b){return {a.x+b.x,a.y+b.y};}
point operator -(point a,point b){return {a.x-b.x,a.y-b.y};}
ld operator *(point a,point b){return a.x*b.y-a.y*b.x;}
ld dis(point a,point b){return sqrt(sq(a.x-b.x)+sq(a.y-b.y));}
bool chk(ld a,ld b)
{
	return abs(a-b)<=1e-18;
}
bool chk(int n)
{
	point s={0,0};
	for(int i=1;i<=n;i++) s=s+a[i];
	s.x/=n,s.y/=n;
	ld cur=dis(s,a[1]);
	for(int i=2;i<=n;i++)
		if(!chk(dis(s,a[i]),cur)) return 0;
	for(int i=2;i<=n;i++)
		if(a[i].y<a[1].y) swap(a[i],a[1]);
	sort(a+2,a+n+1,[](point x,point y){return (x-a[1])*(y-a[1])>0;});
	cur=dis(a[1],a[2]),a[n+1]=a[1];
	for(int i=2;i<=n;i++)
		if(!chk(dis(a[i],a[i+1]),cur)) return 0;
	return 1;
}
int n,m,Q;
int main()
{
	scanf("%d%d%d",&n,&m,&Q);
	for(int i=1;i<=n;i++)
		p[i]=point{cos(i*PI*2/n),sin(i*PI*2/n)};
	for(int i=1,x,y,z;i<=m;i++)
	{
		scanf("%d%d%d",&x,&y,&z);
		p[i+n]=p[z]+p[x]-p[y];
	}
	while(Q--)
	{
		int k,x;
		scanf("%d",&k);
		for(int i=1;i<=k;i++) scanf("%d",&x),a[i]=p[x];
		puts(chk(k)?"Yes":"No");
	}
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 6024kb

input:

3 6 8
1 2 3
3 1 4
5 4 3
3 1 2
4 5 3
4 5 2
6 4 7 6 5 1 2
3 1 3 2
3 1 1 8
4 2 5 6 7
3 2 1 4
3 6 5 9
3 4 7 9
4 1 3 2 8

output:

Yes
Yes
Yes
No
No
No
Yes
No

result:

ok 8 token(s): yes count is 4, no count is 4

Test #2:

score: 0
Accepted
time: 1ms
memory: 6140kb

input:

12 0 1
12 12 11 10 9 8 7 6 5 4 3 2 1

output:

Yes

result:

ok YES

Test #3:

score: -100
Wrong Answer
time: 3ms
memory: 6004kb

input:

3 0 6685
5 1 3 1 2 2
3 1 2 3
5 3 1 3 3 1
4 1 1 1 3
3 3 2 1
5 2 3 2 1 3
6 2 2 3 2 3 1
5 3 1 2 3 2
3 3 3 2
5 3 2 2 2 3
5 2 2 3 3 1
6 3 3 1 3 1 3
6 2 3 3 2 2 1
5 2 2 3 2 2
6 2 3 3 2 1 3
6 2 2 2 2 1 3
3 3 1 2
4 3 2 1 1
5 3 1 3 2 3
4 3 1 1 2
4 2 2 2 3
3 1 2 2
4 2 3 3 1
3 2 2 2
4 1 2 2 3
3 3 3 3
4 1 3 1 3...

output:

No
Yes
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
Yes
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
Yes
No
Yes
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
...

result:

wrong answer expected NO, found YES [60th token]