#include<cstdlib>
#include<cstdio>
#include<cstring>
#include<iostream>
#include<algorithm>
using namespace std;
#define maxn 5010
#define ll long long
#define END fclose(stdin);fclose(stdout);return 0;
int n,x0,y0,xt,yt;
bool f[maxn][maxn];
int read(){
	int x,f=1;
	char ch;
	while(ch=getchar(),!isdigit(ch))if(ch=='-')f=-1;
	x=ch-'0';
	while(ch=getchar(),isdigit(ch))x=x*10+ch-'0';
	return x*f;
}
int main(){
	freopen("loverfinding.in","r",stdin);
	freopen("loverfinding.out","w",stdout);
	n=read();x0=read();y0=read();xt=read();yt=read();
	int tem=1;f[x0+2500][y0+2500]=1;
	for(int i=1;i<=n;i++){
		int a=read(),b=read();
		x0+=a;y0+=b;
		if(!f[x0+2500][y0+2500]){
			//cout<<x0<<" "<<y0<<endl;
			f[x0+2500][y0+2500]=1;
			tem++;
		}
		if(x0==xt&&y0==yt){
			printf("%d",tem);
			goto end;
		}
	}
	printf("SingleDogMZX");
	end:;
	//while(1);
	END
}