#include <cstdio>
#include <string>
#include <cstring>
#include <cstdlib>
#include <cmath>
#include <algorithm>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <list>
#include <iterator>
#include <cassert>
#include <numeric>
#include <functional>
#include <cassert>
//#include <numeric>
#pragma warning(disable:4996) 
 
typedef long long ll;
typedef unsigned long long ull;
#define MIN(a, b) ((a)>(b)? (b): (a))
#define MAX(a, b) ((a)<(b)? (b): (a))
#define LINF  9223300000000000000
#define LINF2 1223300000000000000
#define INF 2140000000
const long long MOD = 1000000007;
//const long long MOD = 998244353;

using namespace std;



void solve()
{
    int n;
    scanf("%d", &n);
    vector<int> x(n), y(n);
    int i;
    for (i = 0; i < n; i++) {
        scanf("%d%d", &x[i], &y[i]);
    }

    int ans = 0;
    int j,k;
    for (i = 0; i < n; i++) {
        for (j = 0; j < n; j++) {
            if (i == j) continue;

            int cnt = 2;
            for (k = 0; k < n; k++) {
                if (j == k || k == i) continue;

                int x0=x[j] - x[i];
                int y0=y[j] - y[i];
                int x1=x[k] - x[i];
                int y1=y[k] - y[i];
                if (x0*y1 == x1 * y0) {
                    cnt++;
                }
            }
            ans = MAX(ans, cnt);
        }
    }
    printf("%d\n", ans);

    return;
}

int main(int argc, char* argv[])
{
#if 1
    solve();
#else
    int T;
    scanf("%d", &T);
    int t;
    for(t=0; t<T; t++) {
        //printf("Case #%d: ", t+1);
        solve();
    }
#endif
    return 0;
}