#include<iostream>
#include<algorithm>
#include<cstdio>
#include<cstring>
#include<string>
#include<iomanip>
#include<ctime>
using namespace std;
int a,x,y,w,e,m[1100000],n[1100000],r[5500][5500]={0},sum=1;
struct one
{
	int t;
	int y;
	int q;
};
one yi[1100000];
int main()
{
	freopen("loverfinding.in","r",stdin);
	freopen("loverfinding.out","w",stdout);
	cin>>a>>x>>y>>w>>e;
	if(x==w&&y==e) {cout<<'1'<<endl;return 0;}
	x+=2600;y+=2600;w+=2600;e+=2600;
	r[x][y]=1;
	for(int i=1;i<=a;i++)
		cin>>m[i]>>n[i];
	for(int i=1;i<=a;i++)
	{
		
		x+=m[i];
		y+=n[i];
		if(r[x][y]==0){r[x][y]=1;sum++;}
		if(x==w&&y==e) {cout<<sum<<endl;return 0;}
	}
	cout<<"SingleDogMZX"<<endl;
	return 0;
}