05. Auto-Engineering Company

function autoEngineeringCompany(input) {
  const cars = new Map();

  input.forEach((line) => {
    const tokens = line.split(' | ');
    const [brand, model, count] = tokens;

    if (!cars.get(brand)) {
      cars.set(brand, new Map());
    }
    if (!cars.get(brand).get(model)) {
      cars.get(brand).set(model, 0);
    }

    cars.get(brand).set(model, cars.get(brand).get(model) + Number(count));
  });

  for (const [brand, modelCount] of cars) {
    console.log(brand);

    for (const [model, count] of modelCount) {
      console.log(`###${model} -> ${count}`);
    }
  }
}