#define ENABLE_DEBUG 1
// hidden common codes{{{
#include<bits/stdc++.h>
#define ALL(v) std::begin(v),std::end(v)
using lint=long long;
using ld=long double;
template<class T> using numr=std::numeric_limits<T>;
struct input_t {
    template<class T> operator T() {
        T t;
        std::cin>>t;
        return t;
    }
} input;
#ifdef NGTKANA
#include<debug.hpp>
#else
#define DEBUG(...)(void)0
#endif
/*}}}*/

auto cmx=[](auto&x,auto y){if(x<y){x=y;return true;}return false;};

int main(){
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);
    lint n=input;
    std::vector<std::array<lint,2>>pts(n);
    for(auto&&p:pts)for(lint&x:p)x=input;

    auto is_colinear=[&](auto p0,auto p1,auto p2){
        for(lint i=0;i<2;i++){
            p1.at(i)-=p0.at(i);
            p2.at(i)-=p0.at(i);
        }
        lint det=p1.at(0)*p2.at(1)-p1.at(1)*p2.at(0);
        return det==0;
    };

    lint ans=0;
    for(lint i=0;i<n;i++)for(lint j=i+1;j<n;j++){
        lint now=0;
        for(lint k=0;k<n;k++){
            now+=is_colinear(pts.at(i),pts.at(j),pts.at(k));
        }
        cmx(ans,now);
    }
    std::cout<<ans<<'\n';
}