#include <iterator>
#include <ostream>
#include <string>
#include <vector>
#include <iostream>
#include "include/parser.hpp"
#include "include/expressions.hpp"
#include "include/exceptions.hpp"
#include "include/differentiator.hpp"

using std::string, std::cin, std::cout, std::getline, std::vector,
  std::begin, std::end, std::endl;

int main(){
  string input;
  Parser parser;
  Expression *tree;
  Expression *differential = NULL;
  getline(cin, input);

  try {
    tree = parser.parse(input);
    cout << tree->getRepr() << '\n';
  } catch(const ParserException &e) {
    cout << e.showMsg() << endl;
    tree = NULL;
  }

  if(tree != NULL) {
    differential = deriv(tree);
    delete tree;
    delete differential;
  }
  
  return 0;
}