#include <bits/stdc++.h>
using namespace std;
int main(){
    int q;
    cin>>q;
    vector<int>v(3);
    while(q--){
      for(auto it:v)
        cin>>it;
      sort(v.begin(),v.end());
      if(v[0]==v[1]&&v[1]==v[2])// 5 5 5
      cout<<0<<endl;
      else if(v[0]==v[1]&&v[2]-v[1]==1) // 3 3 4
        cout<<0<<endl;
      else if(v[1]==v[2]&&v[1]-v[0]==1)// 2 3 3
        cout<<0<<endl;
      else if(v[1]==v[2]) //2 5 5 
         cout<<(v[1]-v[0]-2)*2<<endl;
      else if(v[0]==v[1])  //3 3 6
          cout<<(v[2]-v[1]-2)*2<<endl;
      else {
          cout<<(v[1]-v[0]-1)+(v[2]-v[1]-1)+(v[2]-v[0]-2)<<endl;
      }
    }
}

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OAozIDMgNAoxMCAyMCAzMAo1IDUgNQoyIDQgMwoxIDEwMDAwMDAwMDAgMTAwMDAwMDAwMAoxIDEwMDAwMDAwMDAgOTk5OTk5OTk5CjMgMiA1CjMgMiA2Cg==

8
3 3 4
10 20 30
5 5 5
2 4 3
1 1000000000 1000000000
1 1000000000 999999999
3 2 5
3 2 6