text: #include <vector>
  #include <iostream>
  #include "printer.h"
  using namespace std;
  
  int main() {
      vector<int> a = {1, 2, 3, 4, 5, 6};
  
      cout << "a = " << a << endl;
      a.erase(a.begin() + 1, a.begin() + 3);
      cout << "a = " << a << endl;
  
      return 0;
  }
  