Name the class 1-200 for university of hertfordshire for university of warwick
create table table_1936678_1 (class_1 varchar, best_uk_team varchar, class_1a varchar, PRIMARY KEY (class_1))
select class_1 - 200 from table_1936678_1 where best_uk_team = "university of hertfordshire" and class_1a = "university of warwick"