T=int(input())
inf=1<<60
for t in range(T):
    A,B,C=map(int,input().split())
    s=0
    if A==C:
        s+=1
        C-=1
    if A>C:
        A,C=C,A
    ans=inf
    if A>=2:
        ans=min(ans,max(B-A+1,0)+s)
    if B>=3 and C>=2:
        ans=min(ans,max(A-B+2,0)+max(C-B+1,0)+s)
    if ans==inf:
        ans=-1
    print(ans)