#include <iostream>
#include <iomanip>
#include <vector>

using namespace std;

// templates not required by assignment
template<typename T>
ostream& operator<<(ostream& os, vector<T> const& v)
{
  if ( v.size() == 0 )
    return os << "[ ]";
  
  typename vector<T>::const_iterator it{ v.cbegin() };
  
  os << "[ " << setw(4) << *it++;
  
  for ( ; it != v.cend(); ++it )
    os << ' ' << setw(4) << *it;
    
  return os << " ]";
}

// templates not required by assignment
template<typename T>
istream& operator>>(istream& is, vector<T>& v)
{
  is >> ws;
  if ( is.peek() != '[' )
    return is;
  is.ignore();
  
  T i;

  is >> ws;
  while ( is.peek() != ']' )
  {
    if ( is >> i >> ws )
      v.emplace_back(i);
  }
  return is.ignore();
}

// NO MODIFICATIONS BELOW THIS LINE

void print(vector<int> const& v)
{
  cout << v << endl;
}

int main()
{
  vector<int> vi;
  string remain;

  cout << "Enter a vector of integers: " << endl;
  cin >> vi;
  cout << vi << endl;
  getline(cin, remain);
  cout << "remain in buffer: '" << remain << "'" << endl;
  
  return 0;
}