text: #include<iostream>
  #include<map>
  using namespace std;
  int main()
  {
    int n,key_to_deleted=3,a[100],b[100],i,j;
   cin>>n;
   map<int,int>mymap;
        for(i=0;i<n;i++)
        {
          cin>>a[i]>>b[i];
        }
    for(j=0;j<n;j++)
       mymap.insert({a[j],b[j]});
      cin>>key_to_deleted; 
      mymap.erase(key_to_deleted);
    map<int, int>::iterator it1 ;
      for (it1 = mymap.begin(); it1!=mymap.end();  ++it1)
      cout << it1->first << " " << it1->second << endl;
  }
  