Time limit exceeded

#1
#2

Ankit, plz change your buildlist function as :

void buildlist(node *&head)
{
int N;
cin>>N;
int data;
while(N>0)
{
cin>>data;
insertAtTail(head,data);
Nā€“;
}
}

and then use the separate function for inserting nodes at the end of linked list.

#3

How this will help to avoid TLE?

#4

This is so because for large cases, the list is taking large time to build in your code thts why ā€¦