give me the total amount of patient 594's input on 05/10/2105?
select sum(inputevents_cv.amount) from inputevents_cv where inputevents_cv.icustay_id in ( select icustays.icustay_id from icustays where icustays.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 594 ) ) and strftime('%y-%m-%d',inputevents_cv.charttime) = '2105-05-10'