If Melanie practices and tries her best, then she will improve

$k$ : Melanie practices. $m$ : Melanie tries her best. $n$ : Melanie will improve. Statement: $(k^{{?}^{?}}m)=>n$

$k$ : Melanie practices. $m$ : Melanie tries her best. $n$ : Melanie will improve. Statement: $(k^{{?}^{?}}m)=>n$

$k$ : Melanie practices. $m$ : Melanie tries her best. $n$ : Melanie will improve. Statement: $(kvvm)=>n$

$k$ : Melanie practices. $m$ : Melanie tries her best. $n$ : Melanie will improve. Statement: $(k^{{?}^{?}}m)=>n$