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

struct Data{ char dir; int64_t cnt; };

using std::cout, std::endl, std::vector, std::ifstream;

int64_t part_1(const vector<Data>&);
int64_t part_2(const vector<Data>&);

int main() {
  ifstream file{"input/2025-1.txt"};
  Data line;
  vector<Data> v;
  while (file >> line.dir >> line.cnt) {
    v.push_back(line);
  }
  cout << "Part 1: " << part_1(v) << endl;
  cout << "Part 1: " << part_2(v) << endl;
}

int64_t part_1(const vector<Data>& v) {
   int64_t loc{50}, presses{0};
   for (auto data : v) {
     if (data.dir == 'L') {
       loc -= data.cnt % 100;
     } else {
       loc += data.cnt % 100;
     }
     loc %= 100;
     if (loc < 0) {
       loc += 100;
     }
     if (loc == 0) {
       ++presses;
     }
   }

  return presses;
}

int64_t part_2(const vector<Data>& v) {
   int64_t loc{50}, presses{0};
   for (auto data : v) {
     auto last_loc = loc;
     if (data.dir == 'L') {
       loc -= data.cnt % 100;
     } else {
       loc += data.cnt % 100;
     }
     presses += std::abs(data.cnt / 100);
     if ((loc != last_loc && loc >= 100) || (loc <= 0 && last_loc != 0)) {
       presses += 1;
     }
     loc %= 100;
     if (loc < 0) {
       loc += 100;
     }
   }

  return presses;
}