def solve():
    a, b, c = map(int, input().split())
    inf = 1 << 60
    aa, bb, cc = a, b, c
    ans1 = max(0, aa - (bb - 1))
    aa = min(aa, bb - 1)
    ans1 += max(0, cc - (bb - 1))
    cc = min(cc, bb - 1)
    if aa == cc:
        ans1 += 1
        aa -= 1
    if min(aa, bb, cc) <= 0:
        ans1 = inf
    if a == c:
        ans2 = 1
        a -= 1
    else:
        ans2 = 0
    ans2 += max(0, b - (min(a, c) - 1))
    b = min(a, c) - 1
    if min(a, b, c) <= 0:
        ans2 = inf
    ans = min(ans1, ans2)
    if ans == inf:
        print(-1)
    else:
        print(ans)
        
for _ in range(int(input())):
    solve()