#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;

//template
#define rep(i,a,b) for(int i=(a);i<(b);i++)
#define rrep(i,a,b) for(int i=(a);i>(b);i--)
#define ALL(v) (v).begin(),(v).end()
typedef long long int ll;
const int inf = 0x3fffffff; const ll INF = 0x1fffffffffffffff; const double eps=1e-12;
void tostr(ll x,string& res){while(x)res+=('0'+(x%10)),x/=10; reverse(ALL(res)); return;}
template<class T> inline bool chmax(T& a,T b){ if(a<b){a=b;return 1;}return 0; }
template<class T> inline bool chmin(T& a,T b){ if(a>b){a=b;return 1;}return 0; }
//template end

int sub(int a,int b,int c){
   int ans=0;
   if(a<=b){
      if(a==1)return inf;
      ans+=b-a+1; b=a-1;
   }
   if(b<=c){
      if(b==1)return inf;
      ans+=c-b+1;
   } return ans;
}

void solve(){
   int a,b,c; scanf("%d%d%d",&a,&b,&c);
   int res=min({sub(b,a,c),sub(b,c,a),sub(a,c,b),sub(c,a,b)});
   printf(res==inf?"-1\n":"%d\n",res);
}

int main(){
   int t; scanf("%d",&t);
   rep(i,0,t)solve();
   return 0;
}