vi_k

arr.reduce((acc, el) => {
    const [cur, sum] = el.split(' ');
    acc[cur] = (acc[cur] || 0) + +sum;
    return acc;
  }, {});

function sumMoney(arr) {
  let acc = {};
  arr.forEach((el) => {
    const [cur, sum] = el.split(' ');
    acc[cur] = (acc[cur] || 0) + +sum;
  });

  return acc;
}