map-pair-vector

int main()
{


    map<pair<ll,ll>,ll>m;


   ll n;

   cin>>n;

   for(ll i=0;i<n;i++)
   {
       ll a,b;

       cin>>a>>b;


       m[{a,b}]++;


   }

   for(auto x:m)cout<<x.fi.fi<<" "<<x.fi.se<<" aisa = "<<x.se<<endl;



}