#include <vector>
#include <iostream>
#include <fstream>

using namespace std;

const int max_applications_num = 1000;

//ToDo  //Declare global variables
vector<string> v_authors;
vector<string> v_title;
vector<string> v_venue;
vector<int> v_year;
vector<string> v_presentation;


void Tokenize(string line, vector<string> & tokens, string delimiters = "\t "){
string token = "";
        string OneCharString = " ";
        for (int i=0; i<line.size(); i++)
                if (find(delimiters.begin(), delimiters.end(), line[i])!=delimiters.end()) // line[i] is one of the delimiter characters
       		{
			if (token != "")
                        	tokens.push_back(token);
                        token = "";
                }
                else
                {
                        OneCharString[0] = line[i];
                        token +=OneCharString;
                }

        if (token != "")
                tokens.push_back(token);
}

void SaveApplication(const vector<string>& tokens){

	string authors = tokens[1];
        string title = tokens[2];
	string venue = tokens[3];  
 	int year = atoi(tokens[4].c_str());
 	string presentation = tokens[5]; 

	v_authors.push_back(authors);
	v_title.push_back(title);
	v_venue.push_back(venue);
	v_year.push_back(year);
	v_presentation.push_back(presentation);
}

void remove_application(int pos){

	v_authors.erase(v_authors.begin()+pos);
 	v_title.erase(v_title.begin()+pos);
	v_venue.erase(v_venue.begin()+pos);
	v_year.erase(v_year.begin()+pos);
	v_presentation.erase(v_presentation.begin()+pos);

}

void sort(){
	int n=v_authors.size();
	for (int i=0; i<n; i++)
	{
		for (int j=0; j<i; j++)
			if (v_year[i]<v_year[j]){
				int tmp_year = v_year[i];
				string tmp_authors = v_authors[i];
				string tmp_title = v_title[i];
				string tmp_venue = v_venue[i];
				string tmp_presentation = v_presentation[i];
				for (int ctr=j; ctr<i; ctr++){
					v_authors[ctr+1] = v_authors[ctr];
					v_title[ctr+1] = v_title[ctr];
					v_venue[ctr+1] = v_venue[ctr];
					v_presentation[ctr+1] = v_presentation[ctr];
					v_year[ctr+1]=v_year[ctr];
				}
				v_year[j]=tmp_year;
				v_authors[j] = tmp_authors;
                                v_title[j] = tmp_title;
                                v_venue[j] = tmp_venue;
                                v_presentation[j] = tmp_presentation;
				break;
			}
	}
}

void print(){
	for (int i=0; i<v_authors.size(); i++)
	{
		cout << v_authors[i] << "\t";
		cout << v_title[i] << "\t";
		cout << v_venue[i] << "\t";
		cout << v_year[i] << "\t";
		cout << v_presentation[i] << "\n";
	}
	cout<<endl;
}

void ExecuteCommands(const char* fname){
	ifstream inf;
	inf.open(fname);

	string line;
	while (getline(inf, line).good()){
		vector<string> tokens;
		Tokenize(line, tokens, "\t ");
		if (tokens.size()==0)
			continue;
		
		if (tokens[0]=="save_application")
			SaveApplication(tokens);			
		
		else if (tokens[0]=="remove_application")
			remove_application(atoi(tokens[1].c_str()));
		
		else if (tokens[0]=="sort")
			sort();
		
		else if (tokens[0]=="print")
			print();
	}

	inf.close();
}

int main(int argc, char** argv){
	if (argc != 2){
		cout << "usage: executable.o command.txt\n";
		return 1;
	}

	ExecuteCommands(argv[1]);
	return 0;
}