#include<iostream>
#include<fstream>
#include<cstdio>
#include<algorithm>
using namespace std;
double g=-9.81;
long long n,q,c;
double inx,iny,vx,vy,t0;
pair<double, double> a[100001],ans[100001];
pair<double, long long> t[100001];
int main()
{
	freopen("ball.in","r",stdin);
	freopen("ball.out","w",stdout);
	scanf("%lld",&n);
	for(int i=1; i<=n; i++)
	{
	    scanf("%lf%lf",&a[i].first,&a[i].second);
	}
	scanf("%lld",&q);
	for(int i=1; i<=q; i++)
	{
	    scanf("%lf",&t[i].first);
	    t[i].second=i;
	}
	sort(a+1,a+n+1);
	sort(t+1,t+q+1);
	inx=0; iny=0; vx=5; vy=0;
	c=1; t0=0;
	for(int i=1; i<=n; i++)
	{
	    while(c<=q&&t[c].first<a[i].first)
	    {
	        double ansy=(g*(double)((t[c].first-t0)*(t[c].first-t0)))/2+vy*(double)(t[c].first-t0)+iny;
	        double ansx=vx*(double)(t[c].first-t0)+inx;
	        ans[t[c].second]=make_pair(ansx,ansy);
	        c++;
	    }
	    iny=(g*(a[i].first-t0)*(a[i].first-t0))/2+vy*(a[i].first-t0)+iny;
        inx=vx*(a[i].first-t0)+inx;
        t0=a[i].first;
	    vy=a[i].second;
	}
	while(c<=q)
	{
	    double ansy=(g*(t[c].first-t0)*(t[c].first-t0))/2+vy*(t[c].first-t0)+iny;
        double ansx=vx*t[c].first+inx;
        ans[t[c].second]=make_pair(ansx,ansy);
        c++;
	}
	for(int i=1; i<=q; i++)
	{
	    printf("%.3lf %.3lf\n",ans[i].first,ans[i].second);
	}
	return 0;
}
<!-- 0.0491s -->