#include<iostream>
#include<cstdio>
#include<vector>

using namespace std;
const int maxn=1000001;
int hh[maxn],aa[maxn];
int main()
{
	freopen("loverfinding.in","r",stdin);
	freopen("loverfinding.out","w",stdout); 
	int n,x0,y0,xt,yt;
	scanf("%d%d%d%d%d",&n,&x0,&y0,&xt,&yt);
	int x,y;
	int q,p=0;
	q=n;
	for(int i=1;i<=n;i++)
	{
		scanf("%d%d",&x,&y);
		hh[i]=x;
		aa[i]=y;
	}
	for(int i=1;i<=n;i++)
	{
		x0=x0+hh[i];
		y0=y0+aa[i];
		hh[i]=x0;
		aa[i]=y0;
		/*if(x0==xt&&y0==yt)
		{
			printf("%d",i+1);
			p=p+1;
		}*/
	}
	for(int i=1;i<=n;i++)
	{
		if(hh[i]==xt&&aa[i]==yt)
		printf("%d",i+1);
		p=p+1;
	}
	if(p==0)
	{
		printf("%d",q+1);
		printf("SingleDogMZX");
	}
	return 0;
}