list<contact> lstcon = new list<contact>();
  map<Account,list<contact>> mapacccon = new map<account,list<contact>>();

for(contact con : mapacccon.values())
        {
                con.accountid = '00128000010UjnR' ;

                 lstcon.add(con);

                       }

                       update lstcon;
                      delete [select id from account where name like 'ADP Limited'];

               }

global void finish(database.BatchableContext bcon)
{

}