Uniqueness of L-function and certain class of meromorphic function under two weighted shared sets of least cardinalities

In this article we study the uniqueness problem of an L function belonging to Selberg class with arbitrary meromorphic having finite poles sharing two sets. Actually answer a question raised by Lin-Lin [Filomat, 30(2016), 3795-3806], have significantly improved recent result [Rend. Del. Math. Palermo, (2020)(published online)] authors and that Chen-Qiu [Acta. Sci., 40B(4) (2020), 930-980]. Moreover also been able provide best possible another unsolved 3795-3806] investigated results same in light weighted sharing.