day1a.cpp

#include <string>
#include <vector>
#include <sstream>
#include <fstream>
#include <cassert>

namespace day1a
{
	int main()
	{
		//	std::string input0 = R"(L68
		//L30
		//R48
		//L5
		//R60
		//L55
		//L1
		//L99
		//R14
		//L82)";

		std::string input0;
		std::ifstream ifile("input1a.txt");
		if (ifile.is_open())
		{
			while (!ifile.eof())
			{
				std::string line;
				std::getline(ifile, line);
				input0 += line + '\n';
			}
			input0.pop_back(); // no trailing newline character please
			//__debugbreak();
		}
		else
		{
			assert(0);
		}

		std::vector<std::string> input0a;
		std::string temp;
		for (char c : input0)
		{
			if (c == '\n')
			{
				input0a.push_back(temp);
				temp = "";
				continue;
			}
			temp += c;
		}
		input0a.push_back(temp);

		std::vector<std::string> input0b;
		std::istringstream iss(input0);
		for (std::string line; std::getline(iss, line);)
		{
			input0b.push_back(line);
		}

		std::vector<std::pair<char, int>> input1a;
		for (auto& s : input0a)
		{
			char dir = s[0];
			int cnt = std::stoi(s.substr(1));
			input1a.emplace_back(dir, cnt);
		}

		int dial = 50;
		int count = 0;
		for (auto& c : input1a)
		{
			if (c.first == 'L')
			{
				dial -= c.second;
			}
			else
			{
				dial += c.second;
			}
			while (dial >= 100)
				dial -= 100;
			while (dial < 0)
				dial += 100;
			if (dial == 0)
				count++;
		}



		__debugbreak();
		return 0;
	}
}