#include<cstdio>
#include<cstring>
#include<iostream>
#include<algorithm>
#include<vector>
using namespace std;
#define ll long long
#define ge getchar 
#define pun putchar('\n')
#define pu putchar
#define puk putchar(' ')
#define pb push_back
struct fr{
	ll z,m;//m>0
};
struct dian{
	fr x,y;
};
typedef vector<dian> ved;
int n;
fr f1_2={1,2},f0={0,1};
vector<dian>a;
dian q;
void yf(fr&a){
	ll d=__gcd(a.z,a.m);
	a.z/=d;a.m/=d;
}
fr operator *(fr a,fr b){
	fr c;
	c.z=a.z*b.z;
	c.m=a.m*b.m;
	yf(c);
	return c;
}
fr operator +(fr a,fr b){
	fr c;
	c.z=a.z*b.m+a.m*b.z;
	c.m=a.m*b.m;
	yf(c);
	return c;
}
fr operator -(fr a,fr b){
	fr c;
	c.z=a.z*b.m-a.m*b.z;
	c.m=a.m*b.m;
	yf(c);
	return c;
}
fr operator /(fr a,fr b){
	fr c;
	c.z=a.z*b.m;
	c.m=a.m*b.z;
	yf(c);
	if(c.m<0)c.m=-c.m,c.z=-c.z;
	
	return c;
}
double va(fr a){return (double)a.z/a.m;}
bool operator ==(fr a,fr b){
	return a.z==b.z&&a.m==b.m;
}
double mx,my;
fr ff(){
	//y<=q.y+1/2
	vector<dian>jd;
	vector<int>yo;
	fr yy=f1_2+q.y,xx;
	dian u;u=a[n-1];
	//printf("!\n");
	for(int i=0;i<n;i++){
		dian v=a[i];
		if((va(yy)-va(v.y))*(va(yy)-va(u.y))<=0){
			fr dx=v.x-u.x,dy=v.y-u.y;
			//printf("%.6lf %.6lf \n",va(dx),va(dy));
			xx=(yy-u.y)*dx/dy+u.x;
			//jiaodian=(xx,yy) xx\in [v.x u.x]
			if((va(xx)-va(v.x))*(va(xx)-va(u.x))<=0){
				dian s={xx,yy};
				if(!(s.x==v.x&&s.y==v.y)){
				//printf("(%.6lf,%.6lf)\n",va(xx),va(yy));
				jd.push_back(s);
				yo.push_back(i);}
			}
		}
		u=v;
	}
	int r=jd.size();
	ved b;
	if(r<=1){
		if(my>va(yy))return f0;
		b=a;
	}else{
		if(va(a[yo[0]].y)<=va(yy)){	
			b.pb(jd[1]);
			b.pb(jd[0]);
			int i=yo[0];
			while(i!=yo[1]){
				b.pb(a[i]);
				i++;
				if(i==a.size())i=0;
			}
		}else{
			b.pb(jd[0]);
			b.pb(jd[1]);
			int i=yo[1];
			while(i!=yo[0]){
				b.pb(a[i]);
				i++;
				if(i==a.size())i=0;
			}
		}
	}
	//printf("!!\n");
	/*printf("poly %d\n",b.size());
	for(int i=0;i<b.size();i++){
		printf("b(%.6lf,%.6lf)\n",va(b[i].x),va(b[i].y));
	}*/
	//y>=q.y-1/2
	jd.clear();yo.clear();
	yy=q.y-f1_2;
	//printf("poly %d\n",b.size());
	u=b[b.size()-1];
	double yb=0.0;
	for(int i=0;i<b.size();i++){
		dian v=b[i];yb+=va(v.y);
		if((va(yy)-va(v.y))*(va(yy)-va(u.y))<=0){
			fr dx=v.x-u.x,dy=v.y-u.y;
			xx=(yy-u.y)*dx/dy+u.x;
			//jiaodian=(xx,yy) xx\in [v.x u.x]
			if((va(xx)-va(v.x))*(va(xx)-va(u.x))<=0){
				dian s={xx,yy};		
				if(!(s.x==v.x&&s.y==v.y)){
				//printf("(%.6lf,%.6lf)\n",va(xx),va(yy));
				jd.push_back(s);
				yo.push_back(i);}
			}
		}
		u=v;
	}
	yb/=b.size();
	r=jd.size();
	ved c;
	if(r<=1){
		if(yb<va(yy))return f0;
		c=b;
	}else{
		if(va(b[yo[0]].y)>=va(yy)){
			c.pb(jd[1]);
			c.pb(jd[0]);
			int i=yo[0];
			while(i!=yo[1]){
				c.pb(b[i]);
				i++;
				if(i==b.size())i=0;
			}
		}else{
			c.pb(jd[0]);
			c.pb(jd[1]);
			int i=yo[1];
			while(i!=yo[0]){
				c.pb(b[i]);
				i++;
				if(i==b.size())i=0;
			}
		}
	}
	//printf("!!!\n");
	/*printf("poly %d\n",c.size());
	for(int i=0;i<c.size();i++){
		printf("c(%.6lf,%.6lf)\n",va(c[i].x),va(c[i].y));
	}*/
	//x<=q.x+1/2
	jd.clear();yo.clear();
	xx=q.x+f1_2;
	u=c[c.size()-1];
	double xc=0.0;
	for(int i=0;i<c.size();i++){
		dian v=c[i];xc+=va(v.x);
		if((va(xx)-va(v.x))*(va(xx)-va(u.x))<=0){
			fr dx=v.x-u.x,dy=v.y-u.y;
			yy=(xx-u.x)*dy/dx+u.y;
			//jiaodian=(xx,yy) xx\in [v.x u.x]
			if((va(yy)-va(v.y))*(va(yy)-va(u.y))<=0){
				dian s={xx,yy};		
				if(!(s.x==v.x&&s.y==v.y)){
				//printf("(%.6lf,%.6lf)\n",va(xx),va(yy));
				jd.push_back(s);
				yo.push_back(i);}
			}
		}
		u=v;
	}
	xc/=c.size();
	r=jd.size();
	b.clear();
	if(r<=1){
		if(xc>va(xx))return f0;
		b=c;
	}else{
		if(va(c[yo[0]].x)<=va(xx)){
			b.pb(jd[1]);
			b.pb(jd[0]);
			int i=yo[0];
			while(i!=yo[1]){
				b.pb(c[i]);
				i++;
				if(i==c.size())i=0;
			}
		}else{
			b.pb(jd[0]);
			b.pb(jd[1]);
			int i=yo[1];
			while(i!=yo[0]){
				b.pb(c[i]);
				i++;
				if(i==c.size())i=0;
			}
		}
	}
	/*printf("!!!!\n");
	//x>=q.x-1/2
	printf("poly %d\n",b.size());
	for(int i=0;i<b.size();i++){
		printf("b(%.6lf,%.6lf)\n",va(b[i].x),va(b[i].y));
	}*/
	
	jd.clear();yo.clear();
	xx=q.x-f1_2;
	u=b[b.size()-1];
	double xb=0.0;
	for(int i=0;i<b.size();i++){
		dian v=b[i];xb+=va(v.x);
		if((va(xx)-va(v.x))*(va(xx)-va(u.x))<=0){
			fr dx=v.x-u.x,dy=v.y-u.y;
			yy=(xx-u.x)*dy/dx+u.y;
			//jiaodian=(xx,yy) xx\in [v.x u.x]
			if((va(yy)-va(v.y))*(va(yy)-va(u.y))<=0){
				dian s={xx,yy};				
				if(!(s.x==v.x&&s.y==v.y)){
				//printf("(%.6lf,%.6lf)\n",va(xx),va(yy));
				jd.push_back(s);
				yo.push_back(i);}
			}
		}
		u=v;
	}
	xb/=b.size();
	r=jd.size();
	c.clear();
	if(r<=1){
		if(xb<va(xx))return f0;
		c=b;
	}else{//printf("poly %d\n",b.size());
		if(va(b[yo[0]].x)>=va(xx)){
			c.pb(jd[1]);
			c.pb(jd[0]);
			int i=yo[0];
			while(i!=yo[1]){
				c.pb(b[i]);
				i++;
				if(i==b.size())i=0;
			}
		}else{
			c.pb(jd[0]);
			c.pb(jd[1]);
			int i=yo[1];
			while(i!=yo[0]){
				c.pb(b[i]);
				i++;
				if(i==b.size())i=0;
			}
		}
	}
	//printf("poly %d\n",c.size());
	//area c
	fr s={0,1};
	dian w=c[0];
	u=c[1];
	for(int i=2;i<c.size();i++){
		dian v=c[i];//u*v
		s=s+(u.x-w.x)*(v.y-w.y)-(u.y-w.y)*(v.x-w.x);
		u=v;
	}
	s.m*=2;
	yf(s);
	//printf("%d %.6lf\n",c.size(),va(s));
	return s;
}

int main(){
	//freopen("1.in","r",stdin);
	//freopen("1.out","w",stdout);
	scanf("%d",&n);
	int tt;scanf("%d",&tt);
	mx=my=0.0;
	for(int i=1;i<=n;i++){
		dian o;o.x.m=o.y.m=1;
		scanf("%lld%lld",&o.x.z,&o.y.z);
		mx+=va(o.x);my+=va(o.y);
		a.push_back(o);
	}
	mx/=n;my/=n;
	q.x.m=q.y.m=1;
	while(tt--){
		scanf("%lld%lld",&q.x.z,&q.y.z);
		fr s=ff();
		printf("%lld/%lld\n",s.z,s.m);
	}
    return 0;
}