import sys

def input(): return sys.stdin.readline().strip()
def list2d(a, b, c): return [[c] * b for i in range(a)]
def list3d(a, b, c, d): return [[[d] * c for j in range(b)] for i in range(a)]
def list4d(a, b, c, d, e): return [[[[e] * d for j in range(c)] for j in range(b)] for i in range(a)]
def ceil(x, y=1): return int(-(-x // y))
def INT(): return int(input())
def MAP(): return map(int, input().split())
def LIST(N=None): return list(MAP()) if N is None else [INT() for i in range(N)]
def Yes(): print('Yes')
def No(): print('No')
def YES(): print('YES')
def NO(): print('NO')
sys.setrecursionlimit(10 ** 9)
INF = 10 ** 18
MOD = 10 ** 9 + 7
EPS = 10 ** -10

def check(a, b, c):
    return a > 0 and b > 0 and c > 0

for i in range(INT()):
    a, b, c = MAP()

    mx = max(a, b, c)
    cnt = 0
    if mx == a:
        if b < c:
            if a == c:
                cnt += 2
                b -= 1
                c -= 1
        else:
            cnt += abs(b - c) + 1
            b -= abs(b - c) + 1
            
            if a == c:
                cnt += 2
                b -= 1
                c -= 1
    elif mx == b:
        if a == c:
            cnt += 1
            c -= 1
    else:
        if a <= b:
            cnt += abs(a - b) + 1
            b -= abs(a - b) + 1
    if check(a, b, c):
        print(cnt)
    else:
        print(-1)