Merging 2 sorted LL ? showing TLE and last test case as wrong

#1
#2


initialise head to null inside the loop so that it it re created for each test case

#3

for(int i=0;i<t;i++)
{
node* head1=NULL;
node* head2=NULL;
node* head=NULL;

i have already done it ?

#4

in the code u provided, it wasn’t done, in the code i did, i changed that and submitted it, it gets submitted