T = int(input())
A = [0]*T
B = [0]*T
C = [0]*T
for i in range(T):
    A[i], B[i], C[i] = map(int, input().split())

for i in range(T):
    if A[i] == B[i] == C[i]:
        A[i] -= 2
        C[i] -= 1
        ans = 3
    elif A[i] == B[i]:
        if A[i] < C[i]:
            B[i] -= 1
            ans = 1
        else:
            A[i] -= 1
            ans = 1
            if A[i] == C[i]:
                A[i] -= 1
                ans += 1
    elif C[i] == B[i]:
        if C[i] < A[i]:
            B[i] -= 1
            ans = 1
        else:
            C[i] -= 1
            ans = 1
            if A[i] == C[i]:
                C[i] -= 1
                ans += 1
    elif A[i] == C[i]:
        A[i] -= 1
        ans = 1
        if A[i] == B[i]:
            B[i] -= 1
            ans += 1
    elif A[i] < B[i] < C[i] or C[i] < B[i] < A[i]:
        if A[i] > C[i]:
            temp = A[i]
            A[i] = C[i]
            C[i] = temp
        if A[i] > 1 and B[i]-A[i] > 1:
            ans = min(B[i]-A[i], C[i]-B[i])+1
        elif A[i] > 1:
            ans = 2
        elif B[i]-A[i] > 1:
            ans = C[i]-B[i]+1
        else:
            ans = -1
    else:
        ans = 0
    if A[i] <= 0 or B[i] <= 0 or C[i] <= 0:
        ans = -1
    print(ans)