mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
#include<stdio.h>
|
|
#include<math.h>
|
|
#include<algorithm>
|
|
#include<string.h>
|
|
#include<iostream>
|
|
using namespace std;
|
|
const double eps=1e-9;
|
|
int dcmp(double x){if(x<-eps) return -1;return x>eps;}
|
|
struct point3
|
|
{
|
|
double x,y,z;
|
|
point3(double x=0,double y=0,double z=0):x(x),y(y),z(z){}
|
|
void read(){int xt,yt,zt;scanf("%d %d %d",&xt,&yt,&zt);x=xt;y=yt;z=zt;}
|
|
};
|
|
point3 operator -(point3 a,point3 b){return point3(a.x-b.x,a.y-b.y,a.z-b.z);}
|
|
point3 operator *(point3 a,double b){return point3(a.x*b,a.y*b,a.z*b);}
|
|
bool operator <(point3 a,point3 b){return a.x<b.x||(dcmp(a.x-b.x)==0&&a.y<b.y)||(dcmp(a.x-b.x)==0&&dcmp(a.y-b.y)==0&&a.z<b.z);}
|
|
bool operator ==(point3 a,point3 b){return !(a<b||b<a);}
|
|
double dot(point3 a,point3 b){return a.x*b.x+a.y*b.y+a.z*b.z;}
|
|
double cross(point3 a,point3 b){return a.x*b.y-a.y*b.x;}
|
|
double length(point3 a){return sqrt(dot(a,a));}
|
|
int convexhull(point3 *p,int n,point3 *ch)
|
|
{
|
|
sort(p,p+n);
|
|
int nt=0;
|
|
for(int i=0;i<n;i++)
|
|
{
|
|
if(!nt||!(p[nt-1]==p[i])) p[nt++]=p[i];
|
|
}
|
|
n=nt;
|
|
int m=0;
|
|
for(int i=0;i<n;i++)
|
|
{
|
|
while(m>1&&dcmp(cross(ch[m-1]-ch[m-2],p[i]-ch[m-2]))<=0) --m;
|
|
ch[m++]=p[i];
|
|
}
|
|
int k=m;
|
|
for(int i=n-2;i>=0;i--)
|
|
{
|
|
while(m>k&&dcmp(cross(ch[m-1]-ch[m-2],p[i]-ch[m-2]))<=0) --m;
|
|
ch[m++]=p[i];
|
|
}
|
|
if(n>1) --m;
|
|
return m;
|
|
}
|
|
int n,m;
|
|
double a,b,c,d;
|
|
point3 p[105],p0,q[105],ch[105];
|
|
int main()
|
|
{
|
|
int i,j;
|
|
int at,bt,ct,dt;
|
|
while(scanf("%d %d %d %d",&at,&bt,&ct,&dt)!=EOF&&(at||bt||ct||dt))
|
|
{
|
|
a=at,b=bt,c=ct,d=dt;
|
|
scanf("%d",&n);
|
|
for(i=0;i<n;i++) p[i].read();
|
|
p0.read();
|
|
for(i=0;i<n;i++) p[i]=p[i]-p0;
|
|
d=d-dot(point3(a,b,c),p0);
|
|
scanf("%d",&m);
|
|
for(i=0;i<m;i++) q[i].read(),q[i]=q[i]-p0;
|
|
int nt=0;
|
|
for(i=0;i<n;i++)
|
|
{
|
|
double te=dot(point3(a,b,c),p[i]);
|
|
if(dcmp(te)==0) continue;
|
|
if(dcmp(d/te)>0) p[i]=p[i]*(d/te),++nt;
|
|
}
|
|
if(nt==0) printf("ZERO\n");
|
|
else if(nt<n) printf("INF\n");
|
|
else
|
|
{
|
|
for(i=0;i<n;i++)
|
|
{
|
|
if(ct) p[i].z=0;
|
|
else if(bt) swap(p[i].y,p[i].z),p[i].z=0;
|
|
else swap(p[i].x,p[i].z),p[i].z=0;
|
|
}
|
|
nt=convexhull(p,n,ch);
|
|
int rt=0;
|
|
for(i=0;i<m;i++)
|
|
{
|
|
double te=dot(point3(a,b,c),q[i]);
|
|
if(dcmp(te)==0||dcmp(d/te)<0) continue;
|
|
q[i]=q[i]*(d/te);
|
|
if(ct) q[i].z=0;
|
|
else if(bt) swap(q[i].y,q[i].z),q[i].z=0;
|
|
else swap(q[i].x,q[i].z),q[i].z=0;
|
|
for(j=0;j<nt;j++)
|
|
{
|
|
if(dcmp(cross(q[i]-ch[j],ch[(j+1)%nt]-ch[j]))>=0) break;
|
|
}
|
|
if(j>=nt) {++rt;/*cout<<q[i].x<<" 1 "<<q[i].y<<endl;*/}
|
|
}
|
|
printf("%.2lf%%\n",100.0*rt/m);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|