T = int(input())

for _ in range(T):
    A, B, C = map(int, input().split())
    flag = False
    if A > C:
        A, C = C, A
    if A == C:
        A -= 1
        flag = True
        
    a, b, c = A, B, C
    a = min(B - 2, a)
    c = min(B - 1, c)
    
    if a <= 0:
        res1 = 10**18
    else:
        res1 = A - a + C - c + flag
    a, b, c = A, B, C
    b = min(A - 1, b)
     
    if b <= 0:
        res2 = 10**18
    else:
        res2 = B - b + flag
         
    res = min(res1, res2)
         
    print(res if res != 10**18 else -1)