多角形の面積計算
//====================================================================||
// ||
// ||
// Author : GCA ||
// 6AE7EE02212D47DAD26C32C0FE829006 ||
//====================================================================||
#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <climits>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <cctype>
#include <utility>
using namespace std;
#ifdef ONLINE\_JUDGE
#define ll "%lld"
#else
#define ll "%I64d"
#endif
typedef unsigned int uint;
typedef long long int Int;
#define Set(a,s) memset(a,s,sizeof(a))
#define Write(w) freopen(w,"w",stdout)
#define Read(r) freopen(r,"r",stdin)
#define Pln() printf("\\n")
#define I\_de(x,n)for(int i=0;i<n;i++)printf("%d ",x\[i\]);Pln()
#define De(x)printf(#x"%d\\n",x)
#define For(i,x)for(int i=0;i<x;i++)
#define CON(x,y) x##y
#define Pmz(dp,nx,ny)for(int hty=0;hty<ny;hty++){for(int htx=0;htx<nx;htx++){\\
printf("%d ",dp\[htx\]\[hty\]);}Pln();}
#define M 55
#define PII pair<int,int\>
#define PB push\_back
#define oo INT\_MAX
#define Set\_oo 0x3f
#define Is\_debug true
#define debug(...) if(Is\_debug)printf("DEBUG: "),printf(\_\_VA\_ARGS\_\_)
#define FOR(it,c) for(\_\_typeof((c).begin()) it=(c).begin();it!=(c).end();it++)
#define eps 1e-6
bool xdy(double x,double y){return x>y+eps;}
bool xddy(double x,double y){return x>y-eps;}
bool xcy(double x,double y){return x<y-eps;}
bool xcdy(double x,double y){return x<y+eps;}
int min3(int x,int y,int z){
int tmp=min(x,y);
return min(tmp,z);
}
int max3(int x,int y,int z){
int tmp=max(x,y);
return max(tmp,z);
}
int n;
double pi=acos(-1);
struct polys{
double px\[2000\];
double py\[2000\];
double th;
int pn;
polys(){
pn=0;
}
}poly\[20000\];
char str\[20000\];
double cal(int a){
double ans=0;
for(int i=2;i<poly\[a\].pn;i++){
double x=poly\[a\].px\[i-1\]-poly\[a\].px\[0\];
double y=poly\[a\].py\[i-1\]-poly\[a\].py\[0\];
double x2=poly\[a\].px\[i\]-poly\[a\].px\[0\];
double y2=poly\[a\].py\[i\]-poly\[a\].py\[0\];
ans+=(x\*y2-x2\*y);
// debug("%lf\\n",ans);
}
ans=fabs(ans);
ans\*=poly\[a\].th;
ans/=2.00;
return ans;
}
void clear(){
for(int i=0;i<n;i++)poly\[i\].pn=0;
}
int main() {
ios\_base::sync\_with\_stdio(0);
while(~scanf("%d%\*c",&n)&&n){
double r,th;
for(int i=0;i<n;i++){
gets(str);
int j,t;
sscanf(str,"%lf%n",&poly\[i\].th,&j);
while(~sscanf(str+j,"%lf%lf%n",&poly\[i\].px\[poly\[i\].pn\],&poly\[i\].py\[poly\[i\].pn\],&t)){
// debug("%lf %lf\\n",poly\[i\].px\[poly\[i\].pn\],poly\[i\].py\[poly\[i\].pn\]);
poly\[i\].pn++;
j+=t;
}
}
scanf("%lf%lf",&r,&th);
double ans=0;
for(int i=0;i<n;i++)ans+=cal(i);
// debug("%lf %lf\\n",ans,(r\*r\*pi\*th));
printf("%d\\n",(int)(ans/(r\*r\*pi\*th)));
clear();
// printf("ook");
}
}