#include <stdio.h>
int n,x,y,xx,yy,i,d[2][1000000],a,b,num,j,p,e;
int main()
{
	freopen("loverfinding.in","r",stdin);
	freopen("loverfinding.out","w",stdout);
	scanf("%d %d %d %d %d",&n,&x,&y,&xx,&yy);
	num=1;
	d[0][1]=x;
	d[1][1]=y;
	e=0;
	for(i=1;i<=n+1;i++)
	{
		if(x==xx&&y==yy)
		{
			printf("%d",num);
			i=n+1;
			e=1;
		}
		scanf("%d %d",&a,&b);
		x+=a;
		y+=b;
		p=0;
		for(j=1;j<=num;j++)
		{
			if(d[0][j]==x&&d[1][j]==y)
			{
				p=1;
				j=num+1;
			}
		}
		if(p!=1)
		{
			num++;
			d[0][num]=x;
			d[1][num]=y;
		}
		
	}
	if(e==0)  
		printf("SingleDogMZX");
	return 0;
}