Programming Fundamentals - International SoftUniada

function solve(params) {
  params.pop();
  let competition = {};

  for (let param of params) {
    let [countryName, contestantName, contestantPoints] = param.split(" -> ");

    if (!competition.hasOwnProperty(countryName)) {
      competition[countryName] = {};
    }
    if (!competition[countryName].hasOwnProperty(contestantName)) {
      competition[countryName][contestantName] = Number(contestantPoints);
    } else {
      competition[countryName][contestantName] += Number(contestantPoints);
    }
  }

  Object.entries(competition).forEach(c => {
    let totalPoints = 0;
    Object.values(c[1]).forEach(value => (totalPoints += value));
    console.log(`${c[0]}: ${totalPoints}`);
    Object.entries(c[1]).forEach(contestant =>
      console.log(` -- ${contestant[0]} -> ${contestant[1]}`)
    );
  });
}