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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
#545580#9227. Henry the PlumberQingTianWA 1ms3712kbC++141.1kb2024-09-03 15:12:402024-09-03 15:12:40

Judging History

你现在查看的是最新测评结果

  • [2024-09-03 15:12:40]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:3712kb
  • [2024-09-03 15:12:40]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
typedef double ld;
typedef long long ll;
ld eps=1e-9;
int sgn(ld x){
	if(fabs(x)<eps) return 0;
	if(x>0) return 1;
	return -1;
}
struct p3{
	ll x,y,z;
	friend p3 operator-(p3 a,p3 b){return {a.x+b.x,a.y+b.y,a.z+b.z};}
	friend ll operator*(p3 a,p3 b){return a.x*b.x+a.y*b.y+a.z*b.z;}
	void debug(){cout<<x<<' '<<y<<' '<<z<<'\n';}
};
void solve(){
	p3 st,ed,vst,ved;
	vst.z=ved.z=0;
	cin>>st.x>>st.y>>st.z;
	cin>>vst.x>>vst.y;
	cin>>ed.x>>ed.y>>ed.z;
	cin>>ved.x>>ved.y;
	p3 t=st-ed;

	if((t*vst)==0 && (t*ved)==0){
		
		cout<<4<<'\n';
	}else{
		ll a1=vst.x,b1=vst.y,c1=vst.x*st.x+vst.y*st.y;
		ll a2=ved.x,b2=ved.y,c2=ved.x*ed.x+ved.y*ed.y;
		ld _x=c1*b2-b1*c2,_y=a1*c2-a2*c1,klm=a1*b2-a2*b1;
		if(klm==0){
			cout<<4<<'\n';
			return;
		}
		ld x=_x/klm,y=_y/klm;
		ld kk=(x-st.x)*(x-ed.x)+(y-st.y)*(y-ed.y);
		ld B=st.z+ed.z,C=st.z*ed.z+kk;
		ld delta=B*B-4.0*C;
		if(sgn(delta)>=0 ) cout<<3<<'\n';
		else cout<<4<<'\n';
	}
}

int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	int _;cin>>_;
	while(_--) solve();
	
	return 0;
}

详细

Test #1:

score: 100
Accepted
time: 1ms
memory: 3676kb

input:

2
-1 -1 3
1 1
2 2 3
2 2
5 5 1
3 0
7 6 -2
1 -2

output:

4
3

result:

ok 2 number(s): "4 3"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3660kb

input:

100
-13 -5 -7
-19 19
-19 -13 0
-7 15
-20 20 19
-17 18
20 -20 -1
18 -19
-18 15 -14
-19 18
19 -20 6
20 -19
-12 9 1
7 -16
-13 -14 -8
8 -13
-19 16 9
20 -19
19 -18 -11
19 -18
19 20 -8
12 20
-11 -9 18
-19 -18
8 11 -13
12 -18
18 13 8
4 -18
-16 20 17
-19 18
20 -18 -3
20 -19
-17 -20 -5
-18 -19
19 16 15
19 20...

output:

4
4
4
4
4
4
3
4
4
4
3
4
4
3
3
4
3
4
4
4
4
4
4
4
4
4
4
4
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
3
4
4
4
4
4
3
4
3
4
4
4
3
4
4
4
4
4
4
4
3
4
3
4
4
4
4
4
4
4
4
4
4
4
4
3
4
4
4
4
4
4
4
3
3
4
3
4
4
4
4
4
4
4
4
4

result:

ok 100 numbers

Test #3:

score: 0
Accepted
time: 0ms
memory: 3676kb

input:

100
20 -9 -19
9 13
-12 14 -18
-17 12
2 -3 -2
2 -19
-8 9 -15
-19 3
-16 -16 -18
2 15
19 17 -6
-10 11
14 -20 -6
-19 7
-17 -8 -1
-7 -15
7 -15 3
2 13
-15 -9 11
15 2
-17 20 13
11 -8
-12 18 16
-18 -17
-17 15 -2
-20 1
8 -6 0
-16 -19
-5 -14 16
-17 10
-7 -16 17
-10 -13
1 1 -13
17 11
-3 -3 -18
4 -17
19 -6 -17
...

output:

3
4
4
4
3
3
4
3
3
4
4
3
4
4
3
3
4
3
4
4
4
4
3
4
3
4
4
3
3
4
4
4
3
4
3
3
4
3
3
4
3
4
3
4
3
4
3
4
4
3
3
4
3
3
4
3
3
4
4
3
3
4
4
3
4
3
3
4
3
3
3
4
3
4
3
4
3
4
3
4
4
3
3
4
3
4
4
4
4
3
3
3
3
4
3
3
4
4
4
4

result:

ok 100 numbers

Test #4:

score: 0
Accepted
time: 0ms
memory: 3644kb

input:

100
10 -9 -13
8 -7
-3 3 -15
-5 11
-14 -20 -17
13 -13
3 20 16
-20 8
-2 -15 -20
8 20
20 -10 15
12 6
4 2 20
14 14
-13 6 -20
-10 20
-18 -15 19
10 9
4 18 -11
-16 -15
20 -11 6
15 -10
-17 -19 -6
-6 8
-19 -19 -18
-11 -9
-6 4 18
11 -5
2 -18 20
0 -12
-10 -18 -17
20 -20
19 19 17
2 -11
-20 2 -16
-19 13
-6 6 -5
...

output:

4
3
4
3
4
4
3
3
3
4
4
3
3
3
4
4
3
3
3
4
4
4
3
4
3
3
3
3
4
4
3
4
4
3
4
3
3
4
4
3
3
3
4
4
3
4
4
4
4
4
3
4
3
4
4
4
3
4
4
3
4
4
3
3
3
4
3
3
3
3
4
4
4
4
3
4
4
3
4
3
4
3
3
3
4
4
3
4
3
4
4
3
4
3
4
4
3
3
4
4

result:

ok 100 numbers

Test #5:

score: 0
Accepted
time: 0ms
memory: 3596kb

input:

100
4 -19 -4
4 18
-15 20 -15
-16 18
-11 -10 -13
-7 14
20 -17 0
6 -20
-12 18 -8
3 -14
20 16 17
10 17
0 19 -17
-11 6
18 -19 -7
13 -13
-17 17 -17
-5 -1
17 -13 19
-10 -12
9 -3 -19
-12 -2
-16 11 13
12 -8
17 12 11
-1 20
13 -14 -5
-4 16
-20 8 -16
16 -3
9 -3 -6
14 -12
16 4 9
-16 -10
-15 -3 -17
-20 -2
20 2 1...

output:

4
4
3
4
3
4
4
4
4
4
3
4
3
4
3
3
4
3
3
4
3
4
3
3
4
4
4
4
4
3
3
4
3
4
3
4
4
4
4
4
3
4
4
4
3
4
4
4
4
4
4
4
4
3
4
4
4
4
4
3
3
3
4
4
4
4
4
3
3
4
3
4
4
4
4
3
4
4
3
4
3
4
3
4
4
4
4
4
4
3
4
3
4
4
4
4
3
4
4
4

result:

ok 100 numbers

Test #6:

score: -100
Wrong Answer
time: 0ms
memory: 3712kb

input:

100
-1 -13 -13
-14 -8
-1 -3 15
6 -14
19 -1 -16
-20 -14
-16 12 18
20 17
-19 17 -6
16 13
15 -8 18
16 10
17 20 0
0 -13
-19 -19 15
-14 -14
-11 -16 17
17 18
0 2 -10
20 -5
-8 -16 0
3 12
-19 0 -3
1 -14
-18 3 -12
-14 -15
20 1 17
20 -4
-20 6 20
20 -7
20 1 -9
-13 -4
2 17 -18
11 13
8 16 14
-12 16
-11 12 -20
0 ...

output:

3
4
4
4
3
4
4
4
3
4
4
4
3
4
3
4
3
4
3
3
4
4
3
3
3
4
4
4
3
3
4
4
4
3
4
4
4
4
3
3
4
4
4
4
4
4
3
4
4
3
3
4
4
3
3
4
4
4
3
4
4
3
3
3
3
4
4
4
4
3
3
3
4
4
3
4
3
3
4
3
3
4
3
4
4
3
3
3
4
4
3
3
4
3
3
3
3
3
4
3

result:

wrong answer 52nd numbers differ - expected: '3', found: '4'