inf = 10**20
def calc1(a,b,c):
    count = 0
    if b <= c:
        count += c-b+1
        c = b-1
    if a >= c:
        count += a-c+1
        a = c-1
    if a > 0:
        return count
    return inf


def calc2(a,b,c):
    count = 0
    if a == c:
        a -= 1
        count += 1
    if b >= a:
        count += b-a+1
        b = a-1
    if b > 0:
        return count
    return inf

t = int(input())
for _ in range(t):
    a,b,c = map(int,input().split())
    if c < a:
        a,c = c,a

    ans = min(calc1(a,b,c),calc2(a,b,c))
    if ans == inf:
        ans = -1
    print(ans)