#include <bits/stdc++.h>
using namespace std;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}
using Int = long long;
const char newl = '\n';

//INSERT ABOVE HERE
signed main(){
  cin.tie(0);
  ios::sync_with_stdio(0);

  Int n;
  cin>>n;
  vector<Int> xs(n),ys(n);
  for(Int i=0;i<n;i++) cin>>xs[i]>>ys[i];

  auto cross=[&](Int x1,Int y1,Int x2,Int y2){
    return x1*y2-x2*y1;
  };

  Int ans=0;
  for(Int i=0;i<n;i++){
    for(Int j=0;j<n;j++){
      if(i==j) continue;
      Int res=1;
      for(Int k=0;k<n;k++){
        if(i==k) continue;
        if(cross(xs[j]-xs[i],ys[j]-ys[i],
                 xs[k]-xs[i],ys[k]-ys[i])==0) res++;
      }
      chmax(ans,res);
    }
  }

  cout<<ans<<newl;
  return 0;
}