#include <bits/stdc++.h>
#define ll long long
#define e endl
#define r0 return 0
#define co continue

using namespace std;

int f ( ll aa , ll bb , ll cc ) {
    vector <ll> arr;
    arr.push_back(aa);
    arr.push_back(bb);
    arr.push_back(cc);
    sort ( arr.begin() , arr.end() );
    if ( arr[2] - arr[0] == 0 || arr[2] - arr[0] == 1 || arr[2] - arr[0] == 2 ) {
        return 0 ;
    }
    else {
        //if ( arr[1] == arr[2] ) {
        //    arr[1] -- ;
        //    arr[2] -- ;
        //    arr[0] ++ ;
            arr[2] -- ;
            arr[1] -- ;
            arr[0] ++ ;
            return ( arr[2] - arr[0] ) + ( arr[1] - arr[0] ) + ( arr[2] - arr[1]);
        //}
        //else {
        //    arr[]
        //}
    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);








    int t ;
    cin >> t ;
    while ( t -- ) {
        ll a , b , c ;
        cin >> a >> b >> c ;
        cout << f ( a , b , c ) << e ;
    }
}