# solve function
def solve(num):
    # test
    assert 1 <= max(num) <= (10**9),'ERROR'
    assert 1 <= min(num) <= (10**9),'ERROR'
    # return
    return max(num) - min(num)

# input
T = int(input())
# test
assert 1 <= T <= 100, 'ERROR'
for _ in range(T):
    num_lis = list(map(int,input().split()))
    print(solve(num_lis))