def lag(hour,h1,m1,h2,m2): min=0 if (hour+h1)==h2 and m1==m2: return min elif (hour+h1)==h2: return m1-m2 th=h1+(hour-1) min=(60*(th-h2))+(m1)+(60-m2) return min n=int(input()) for _ in range(n): l=list(map(int,input().strip().split())) hour=int(input()) print(lag(hour,*l))