#include <iostream.h>
#include <apmatrix.h>
#include <fstream.h>

void main (void) {
	apmatrix<bool> table(20,20,false);
	apmatrix<bool> action(20,20,false);

	ifstream infile ("life.txt",ios::in);
	int n = 0;
	infile >> n;
	for (int g = 0;g < n;g++) {
		int y,z;
		infile >> y;infile >> z;
		table[y][z] = true;
	}


	char x;
	do {
		for (int c = 0;c < 20;c++) {
			cout << "\n";
			for (int d = 0;d < 20;d++) {
				if (table[d][c]) cout << "*"; else cout << " ";
			}
		}
		for (int a = 0;a < 20;a++) {
			for (int b = 0;b < 20;b++) {
				int neighbors = 0;
				if (a-1 >= 0) {
					if (b - 1 >= 0) if (table[a-1][b-1]) neighbors++;
					if (b + 1 <= 19) if (table[a-1][b+1]) neighbors++;
					if (table[a-1][b]) neighbors++;
				}
				if (a+1 <= 19) {
					if (b - 1 >= 0) if (table[a+1][b-1]) neighbors++;
					if (b + 1 <= 19) if (table[a+1][b+1]) neighbors++;
					if (table[a+1][b]) neighbors++;
				}
				if (b+1 <= 19) if (table[a][b+1]) neighbors++;
				if (b-1 >= 0) if (table[a][b-1]) neighbors++;
				if (table[b][a]) { if (neighbors < 2 || neighbors > 3) action[b][a] = true; } else if (neighbors == 3) action[b][a] = true;
			}
		}

		for (int l = 0;l < 20;l++) {
			for (int k = 0;k < 20;k++) {
				if (action[k][l]) if (table[k][l]) table[k][l] = false; else table[k][l] = true;
				action[k][l] = false;
			}
		}

		cout << "\n";
		cin >> x;
	} while (x != 'q');
}