#include <fstream>
#include <iostream>
#include <set>
#include <string>
#include <vector>

std::vector<std::string> SplitStr(std::string str, const std::string &delim)
{
	std::vector<std::string> rtn;

	for(auto split = str.find(delim); split != std::string::npos; split = str.find(delim))
	{
		rtn.push_back(str.substr(0, split));
		str = str.substr(split + delim.size()); // chop off beginning
	}
	if(str.size())
		rtn.push_back(str);

	return rtn;
}

int main()
{
	std::ifstream ifs("data.txt");
	if(!ifs.is_open())
	{
		std::cerr << "Missing data.txt." << std::endl;
		return -1;
	}

	unsigned long total = 0;
	unsigned long total_pt2 = 0;

	for(std::string line; std::getline(ifs, line); )
	{
		if(line == "")
			continue;

		auto sections = SplitStr(line, ",");
		if(sections.size() != 2)
		{
			std::cerr << "Incorrect amount of data for line: " << line << std::endl;
			exit(-1);
		}

		auto elf_a = SplitStr(sections[0], "-");
		auto elf_b = SplitStr(sections[1], "-");

		if(elf_a.size() != 2 || elf_b.size() != 2)
		{
			std::cerr << "Incorrect amount of data for line: " << line << std::endl;
			exit(-2);
		}

		int elf_a_min = std::atoi(elf_a[0].c_str());
		int elf_a_max = std::atoi(elf_a[1].c_str());
		int elf_b_min = std::atoi(elf_b[0].c_str());
		int elf_b_max = std::atoi(elf_b[1].c_str());

		if((elf_a_min <= elf_b_min && elf_a_max >= elf_b_max) ||
		   (elf_b_min <= elf_a_min && elf_b_max >= elf_a_max))
			++total;

		// sort
		if(elf_a_min > elf_b_min)
		{
			std::swap(elf_a_min, elf_b_min);
			std::swap(elf_a_max, elf_b_max);
		}

		if(elf_b_min <= elf_a_max)
			++total_pt2;
	}

	std::cout << "    Total: " <<     total << std::endl;
	std::cout << "PT2 Total: " << total_pt2 << std::endl;

	return 0;
}