q=input()
for i in range(0,q):
    h1,m1,h2,m2=map(int,raw_input().split())
    k=input()
    if(h1+k==h2 and m1==m2):
        print 0
    elif(h1+k>h2 and m2<m1):
        print (((h1+k)-h2)*60)+(m1-m2)
    elif(h1+k>h2 and m1<m2):
        print (((h1+k)-h2)*60)+(m1-m2)