Help with the trigger

Please check below sample code

Set<Id> SetAccountId = new Set<Id>();
 for(Contact cont: Trigger.new) 
 {
  if(cont.AccountId != null) 
  {
            SetAccountId.add(cont.AccountId);
  }
 }
 if(SetAccountId.size() > 0 ) 
 {
        Map<Id, Account> mapAccount = new Map<Id, Account>([Select Id, Name, Type from Account where Id IN :SetAccountId ]);
  for(Contact cont: Trigger.new) 
  {
             if(cont.AccountId != null && mapAccount.containsKey(cont.AccountId) ) 
     {
                cont.Type__c = mapAccount.get(cont.AccountId).Type;
     }
  }
 }