#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
  int N;
  cin>>N;
  vector<int> X(N),Y(N);
  for(int i=0;i<N;i++) cin>>X[i]>>Y[i];
  int ans = 0;
  for(int i=0;i<N;i++)for(int j=i+1;j<N;j++){
    int count = 0;
    for(int k=0;k<N;k++)if((X[j]-X[k])*(Y[i]-Y[j]) == (X[i]-X[j])*(Y[j]-Y[k])) count++;
    ans = max(count,ans);
  }
  cout<<ans<<endl;
}