#include<bits/stdc++.h>
using namespace std;
using Int = long long;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}

//INSERT ABOVE HERE
const Int INF = 1e18;
Int p1(Int a,Int b,Int c){
  // a < b > c
  if(b==2) return INF;
  Int res=0;
  if(a>=b) res+=a-b+1,a=b-1;
  if(c>=b) res+=c-b+1,c=b-1;
  if(a==c) res++;
  return res;
}

Int p2(Int a,Int b,Int c){
  Int res=0;
  if(a==c) a--,res++;
  if(min(a,c)<=1) return INF;
  res+=b-min(a,c)+1;
  return res;
}

signed solve(){
  Int a,b,c;
  cin>>a>>b>>c;
  Int ans=min(p1(a,b,c),p2(a,b,c));
  if(ans==INF) ans=-1;
  cout<<ans<<endl;
  return 0;
}

signed main(){
  Int T;
  cin>>T;
  while(T--) solve();
  return 0;
}