#include<cstdio>
#include<cstring>
#include<cctype>
#include<algorithm>
#include<map>
using namespace std;
int _read(){int ret,neg;char ch;ret=neg=0;while(!isdigit(ch=getchar())&&ch!='-');if(ch=='-')neg=1,ch=getchar();while(ret=ret*10+ch-'0',isdigit(ch=getchar()));if(neg)ret=-ret;return ret;}
struct _q{
	int x,y;
	bool operator < (const _q &a)const{
		return 	x==a.x?y<a.y:x<a.x;
	}
}rt;map<_q,bool>q;
int n,x0,y0,xt,yt;
void _work(){
	//scanf("%d%d%d%d%d",&n,&x0,&y0,&xt,&yt);
	n=_read(),x0=_read(),y0=_read(),xt=_read(),yt=_read();
	int i,x,y,ans=1;rt=(_q){x0,y0};q[rt]=true;
	while(n--){
		//scanf("%d%d",&x,&y);
		x=_read(),y=_read();
		rt.x+=x,rt.y+=y;
		if(q.count(rt)==0)ans++,q[rt]=true;
		if(rt.x==xt&&rt.y==yt){
			printf("%d\n",ans);return;	
		}
	}
	puts("SingleDogMZX");
}
bool _Rabit(),_RABIT=_Rabit();int main(){;}
bool _Rabit(){
#define _Rabit _RABIT
#ifdef _Rabit
	freopen("loverfinding.in","r",stdin);
	freopen("loverfinding.out","w",stdout);
#endif
	_work();
#ifndef _Rabit
	getchar(),getchar();
#endif
	fclose(stdin);fclose(stdout);
}