Problem: In PIET's CS Deparment there is a contest of Geometry. In this contest students are told to find minimum angle between hour and minute hand.

Input:
The first line contains the number of test cases, T. T lines follow, each of which contains two integer Hour hand H and minute hand M .

Output:
Print the minimum angle between the hands.

Constraints
1 ≤ T ≤ 100 
01 ≤ H ≤ 12
01 ≤ M ≤ 59 

SAMPLE INPUT
2
12 30
06 00

SAMPLE OUTPUT
165 
180

Explanation

In first input time is 12:30 i.e. hour hand is in middle of 12 and 1 & minute hand is pointing at 6 which makes angle of 165 degrees. 

In Second input time is 06:00 i.e. hour hand is at 12 and minute hand is at 6 which makes angle of 180 degrees.

Solution (in PYTHON):

Solution:
t=input()
while t>0:
    a,b=raw_input().split()
    h=int(a)
    m=int(b)
    if h==12:
        h=0
    if m==60:
        m=0
    k=m*6
    l=(h*30)+(m*6/12)
    a=abs(k-l)
    if a>=180:
        print 360-a
    else:
        print a
    t=t-1