已知数列\(\left\{{a}_{n}\right\}为： \dfrac{1}{1}, \dfrac{2}{1}, \dfrac{1}{2}, \dfrac{3}{1}, \dfrac{2}{2}, \dfrac{1}{3}, \dfrac{4}{1}, \dfrac{3}{2}, \dfrac{2}{3}, \dfrac{1}{4},⋯⋯, \)依它的前\(10\)项的规律，则\({{a}_{50}}=\)__________．