Language: C++

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
#define   sz(s)         s.size()
#define   ll            long long int
#define   ull           unsigned ll
#define   ld            long double
#define   print(v)      for(ll i=0;i<v.size();i++)cout<<v[i]<<" "
#define   printpair(v)  for(ll i=0;i<v.size();i++)cout<<v[i].first<<" "<<v[i].second<<"\n"
#define   bmd           1000000007
#define   bmd1          998244353
#define   umll          unordered_map<ll,ll>
#define   mll           map<ll,ll>
#define   mcl           map<char,ll>
#define   pll           pair<ll,ll>
#define   F             first
#define   S             second
#define   setp(x)       setprecision(x)
#define   pb            push_back
#define   all(v)        v.begin(),v.end()
#define   tr(a)         for(auto it=a.begin();it!=a.end();it++)
#define   trr(a)        for(auto it1=a.begin();it1!=a.end();it1++)
#define   vll           vector<long long int>
#define   sorty(v)      sort(v.begin(),v.end())
#define   rsort(v)      sort(v.rbegin(),v.rend())
#define   unik(v)       v.erase(unique(all(v)),v.end())
#define   PI            3.1415926535897932384626
#define   db()          cout<<"\n"<<"here"<<"\n"
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;


//---------------------------------------------------------------------------
const int MOD = bmd;
const int N=2e6+100;
inline  ll sqr(ll x){return x*x;}
inline  void normal(ll &a) { a = (a+MOD)%MOD; }
inline  ll modMul(ll a, ll b) { a %= MOD, b %= MOD; normal(a), normal(b); return (a*b)%MOD; }
inline  ll modAdd(ll a, ll b) { a %= MOD, b %= MOD; normal(a), normal(b); return (a+b)%MOD; }
inline  ll modSub(ll a, ll b) { a %= MOD, b %= MOD; normal(a), normal(b); a -= b; normal(a); return a; }
inline  ll modPow(ll b, ll p) { ll r = 1;b=b%MOD; while(p) { if(p&1) r = modMul(r, b); b = modMul(b, b); p >>= 1; } return r; }
inline  ll modInv(ll a) { return modPow(a, MOD-2); }
inline  ll modDiv(ll a,ll b) { return modMul(a, modInv(b)); }
//---------------------------------------------------------------------------
bool vis[N]={false};
void solve()
{
    ll n;
    cin>>n;
    ll a[n];
    //umll mp;
    for(ll i=0;i<n;i++){
        cin>>a[i];
        //mp[a[i]]++;
    }
    ll ans=0;
    umll found;
    for(ll i=0;i<n;i++){
        ll x=a[i];
        if(vis[x]){
            if(found[x])found[x]++;
            continue;
        }

        for(ll j=1;j<=sqrt(x);j++){
            if(x%j==0){
                ll f1=j;
                ll f2=x/j;
                if(f1!=x && mp[f1]>0){
                    found[x]++;
                    break;
                }
                if(f2!=x && mp[f2]>0){
                    found[x]++;
                    break;
                }
                if(f1==x && mp[f1]>1){
                    found[x]++;
                    break;
                }
                if(f2==x && mp[f2]>1){
                    found[x]++;
                    break;
                }
            }
        }
        vis[x]=true;
        //if(!found)ans++;
    }
    tr(found){
        //cout << it->first <<" "<<it->second<<"\n";
        ans+=(it->second);
    }
    cout << n-ans <<"\n";

}
int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);//first give all input then gives output
    ll t=1;
    //cin>>t;
    while(t--){
        solve();
    }

    return 0;
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:70:29: error: 'mp' was not declared in this scope
   70 |                 if(f1!=x && mp[f1]>0){
      |                             ^~
a.cc:74:29: error: 'mp' was not declared in this scope
   74 |                 if(f2!=x && mp[f2]>0){
      |                             ^~
a.cc:78:29: error: 'mp' was not declared in this scope
   78 |                 if(f1==x && mp[f1]>1){
      |                             ^~
a.cc:82:29: error: 'mp' was not declared in this scope
   82 |                 if(f2==x && mp[f2]>1){
      |                             ^~