from re import A


t = int(input())
abc = [[int(i) for i in input().split()] for j in range(t)]


for i in range(t):
    flag = False
    ans = 10**19
    a,b,c = abc[i]
    #aがmax
    if a > 2:
        tmp = 0
        f = True
        A,B,C = a,b,c
        if a <= c:
            tmp += abs(a-1-c)
            C = a-1
        if C <= b:
            if C - 1 <= 0:
                f = False
            tmp += abs(C-1-b)
        if f == True:
            ans = min(ans,tmp)

    #bがmax
    if b > 2:
        f = True
        tmp = 0
        A,B,C = a,b,c
        if a < c:
            A = c
            C = a
        #print(A,B,C,"abc")
        if B <= A:
            tmp += abs(B-1-A)
            A = B-1
        if A <= C:
            if A - 1 <= 0:
                flag = False
            tmp += abs(A-1-c)
        if f == True:
            ans = min(tmp,ans)
        #print(tmp,"tmp",i)

    if c > 2:
        #cがmax
        tmp = 0
        f = True
        A,B,C = a,b,c
        if c <= a:
            tmp += abs(c-1-a)
            A = c-1
        
        if A <= b:
            if A - 1 <= 0:
                f = False
            tmp += abs(A-1-b)
        if f == True:
            ans = min(tmp,ans)
    
    if ans != 10**19:
        print(ans)
    else:
        print(-1)