#include<cstdio>
#include<utility>
#include<set>
using namespace std;
int qr(){
    int f=1;
    int p=0;
    char c=getchar();
    while(!(c=='-'||('0'<=c&&c<= '9'))){
        c=getchar();}
    if (c=='-') {
        f=-1;
        c=getchar();}
    while('0'<=c&&c<='9'){
        p=(p<<1)+(p<<3)+c-'0';
        c=getchar();}
    return p*f;
}
set< pair<int,int> > s;
int main(){
	freopen("loverfinding.in", "r", stdin);
    freopen("loverfinding.out", "w", stdout);
	int n,x0,y0,x1,y1,xx=0,yy=0,i,x,y;
	n=qr();x0=qr();y0=qr();x1=qr();y1=qr();
	xx=x0;
	yy=y0;
	for(i=0;i<n;i++){
		x=qr();
		y=qr();
		s.insert(make_pair(xx,yy));
		if(xx==x1&&yy==y1){
			printf("%d",s.size());return 0;}
		xx+=x;
		yy+=y;}
	printf("SingleDogMZX");
	return 0;
}