#include <iostream>

using namespace std;
    int n;
    int setka[200][200];
    int cord[2];
int main()
{
    for(int i=0;i<200;i++)
        for(int j=0;j<200;j++)
            setka[i][j]=0;
    cin>>n;


    for(int i=0;i<n;i++){
        cin>>cord[0];
        cin>>cord[1];
        setka[cord[0]+100][cord[1]+100]++;
        if (setka[cord[0]+100][cord[1]+100]==5) {
                counter(int cord[0]+100, int cord[1]+100)
        }
        int ctr = 0;
        for(int i=0;i<200;i++)
            for(int j=0;j<200;j++)
                if (setka[i][j]>0) ctr++;
        cout<<str;
    }
    return 0;
}
void counter(int k, int n){
if (setka[k][n] == 5)
 {
  setka[k][n] = 0;

  setka[k + 1][n] = 0;
  counter(k + 1, n);

  setka[k][n + 1] = 0;
  counter(k, n + 1);

  setka[k - 1][n] = 0;
  counter(k - 1, n);

  setka[k][n - 1] = 0;
  counter(k, n - 1);
 }
}