Salesforce Apex Trigger to check a check-box on account Object whenever a new contact created of a specific account

AcconuntForContact.tgr

trigger AcconuntForContact  on Contact (after insert , before update){
    if(trigger.isInsert && trigger.isAfter){
        set<id> ids = new set<id>();
        for(contact con: trigger.new){
            if(con.accountid!=null){
                ids.add(con.accountid);
            }
        }
        list<account> acclist = [select id,name,Contact_Created__c from account where id in: ids];
        for(contact con : trigger.new){
            for(account acc: acclist){
                if(acc.id==con.accountid){
                    acc.Contact_Created__c= true;
                }
            }
        }
        if(accList.size()>0){
            update acclist;
        }
    }
}