export function multiplyMatrices(a: number[][], b: number[][]): number[][] {
  const result: number[][] = [];

  // recorrer filas de A
  for (let i = 0; i < a.length; i++) {
    const row: number[] = [];

    // recorrer columnas de B
    for (let j = 0; j < b[0].length; j++) {
      let sum = 0;

      // multiplicar y sumar
      for (let k = 0; k < b.length; k++) {
        sum += a[i][k] * b[k][j];
      }

      row.push(sum);
    }

    result.push(row);
  }

  return result;
}