#include<cstdio>
#include<iostream>
#include<utility>
#include<set>
using namespace std;
inline int read(){
	int x=0,f=1;
	char ch=getchar();
	while(!isdigit(ch)){
		if(ch=='-')
			f=-1;
		ch=getchar();
	}
	while(isdigit(ch)){
		x=(x<<3)+(x<<1)+ch-'0';
	    ch=getchar();
	}
	return x*f;
}
set< pair<long long,long long> > flag;
int main()
{
	freopen ("loverfinding.in","r",stdin);
	freopen ("loverfinding.out","w",stdout);
	int n,x0,y0,xt,yt,dx,dy,x,y,f=0;
	n=read();x0=read();y0=read();xt=read();yt=read();;
	x=x0;
	y=y0;
	flag.insert(make_pair(x,y));
	for(int i=0;i<n;i++){
		dx=read();dy=read();
		x+=dx;y+=dy;
		flag.insert(make_pair(x,y));
		if(x==xt&&y==yt){
			f=1;
			break;
		}
	}
	if(f==1)
	   printf("%d",flag.size());
	else printf("SingleDogMZX");
return 0;
}