import java.util.Scanner;

public class HelloWorld {
		public static void main (String[] args) {
			Scanner sc = new Scanner(System.in);
			int n = sc.nextInt();
			int[][] positions = new int[n][2];
			for (int i = 0; i < n; i ++) {
				positions[i][0] = sc.nextInt();
				positions[i][1] = sc.nextInt();
			}

			int count = 1;

			for (int i = 0; i < n; i ++) {
				for (int j = i+1; j < n; j ++) {
					long deltax1 = positions[i][0] - positions[j][0];
					long deltay1 = positions[i][1] - positions[j][1];
					int count_temp = 0;
					for (int ni = 0; ni < n; ni ++) {
						long deltax2 = positions[ni][0] - positions[j][0];
						long deltay2 = positions[ni][1] - positions[j][1];
						if (deltax1 * deltay2 == deltax2 * deltay1) {
							count_temp ++;
						}
					}
					if (count_temp > count) {
						count = count_temp;
					}
				}
			}
			
			System.out.println(count);
	}
}