#include<cstdlib>
#include<cstdio>
#include<iostream>
#include<map>
using namespace std;
int read()
{
	int x,f=1;
	char ch;
	while(ch=getchar(),!isdigit(ch))if(ch=='-')f=-1;
	x=ch-48;
	while(ch=getchar(),isdigit(ch))x=x*10+ch-48;
	return x*f;
}
void write(int x)
{
	if(x<0)putchar('-'),x=-x;
	int cnt=0;char ch[50];
	while(ch[++cnt]=x%10+48,x/=10);
	while(putchar(ch[cnt]),--cnt);
	putchar('\n');
}
#define maxn 15000
#define mul 1000000000
#define ll long long
map<ll,bool>flag;
int main()
{
	freopen("loverfinding.in","r",stdin);
	freopen("loverfinding.out","w",stdout);
	int n=read(),x1=read(),y1=read(),x2=read(),y2=read(),cnt=1;
	flag[x1*mul+y1]=1;
	for(int i=1;i<=n;i++)
	{
		int dx=read(),dy=read();
		x1+=dx;y1+=dy;
		if(!flag[x1*mul+y1])cnt++,flag[x1*mul+y1]=1;
		if(x1==x2&&y1==y2)
		{
			write(cnt);
			return 0;
		}
	}
	puts("SingleDogMZX");
	//system("pause");
	fclose(stdin);
	fclose(stdout);
}