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 0 < A[i] < B[i] and 0 < C[i] < B[i] and A[i] != C[i]:
        ans = 0
    elif 0 < B[i] < A[i] and B[i] < C[i] and A[i] != C[i]:
        ans = 0
    else:
        if min(A[i], C[i]) > 1 and max(A[i], B[i], C[i]) > min(A[i], B[i], C[i]):
            cnt = B[i]-min(A[i], C[i])+1
        else:
            cnt = 3*10**9
        ans = 0
        if A[i] >= B[i]:
            ans += A[i]-B[i]+1
            A[i] = B[i]-1
        if C[i] >= B[i]:
            ans += C[i]-B[i]+1
            C[i] = B[i]-1
        if A[i] == C[i]:
            ans += 1
            A[i] -= 1
        ans = min(ans, cnt)
        if A[i] <= 0 or B[i] <= 0 or C[i] <= 0:
            ans = -1
    print(ans)