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:
def calcAnge(h,m):
    if h == 12: h = 0    
    if m == 60: m = 0
    if h ==  0 : h = 12
    
    hour_angle = int(0.5 * ( h*60 + m))
    minu_angle = int(6 * m)
    
    angle = abs(hour_angle - minu_angle)
    
    return int(min( abs(360 - angle), angle))


noc = int(raw_input())
while noc:
    noc-=1
    h,m = map(int,raw_input().split())
    print calcAnge(h,m)