#include<bits/stdc++.h>
#define M 1000005
using namespace std;
int n,x,y,xt,yt,a1,b1,mkx,mky,q[M],w[M],i,j,k;
inline int read()
{
    int x=0,f=1;char ch=getchar();
    while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
    while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();}
    return x*f;
}
int main()
{
	ios::sync_with_stdio(false);
	int S=0;
	memset(q,0,sizeof(q));
	memset(w,0,sizeof(w));
	freopen("loverfinding.in","r",stdin);
    freopen("loverfinding.out","w",stdout);
	//scanf("%d%d%d%d%d",&n, &x, &y, &xt, &yt);
	n=read();x=read();y=read();xt=read();yt=read();
	if(x==xt&&y==yt){cout<<"0"<<endl;return 0;}
	for(i=1;i<=n;i++){q[i]=read();w[i]=read();mkx=x;mky=y;}
	for(i=1;i<=n;i++){mkx+=q[i];mky+=w[i];
	if(mkx==xt&&mky==yt){S=i;cout<<S;}}
    if(S==0){cout<<"SingleDogMZX";}
	return 0;
}
/*<iostream>
  <cstdio>
  <cmath>
  <algorithm>
  <iomanip>
  <cctype>
  <cstdlib>*/