#include<bits/stdc++.h>
#define pi 3.141592
using namespace std;
struct point{int x,y;};
int main()
{
    freopen("geometry.in","r",stdin);
    freopen("geometry.out","w",stdout);
    int n,m;
    vector<point> v;
    stack<point> st;
    cin>>n;
    for(int i=0;i<n;i++)
    {
        point p;
        cin>>p.x>>p.y;
        v.push_back(p);
    }
    cin>>m;
    for(int i=0;i<m;i++)
    {
        point p;
        cin>>p.x>>p.y;
        st.push(p);
    }
    cout<<0<<endl;
    cout<<pi<<endl;
    return 0;
}