for _ in range(int(input())): h,m,s = map(int,input().split()) ss = s * 6 mm = m * 6 + s/10 hh = h * 30 + m/2 + s/120 l = sorted([ss,mm,hh]) print(min([l[1]-l[0], l[2]-l[1], (l[0]-l[2]+360)%360]))