题解

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll a,b,c,minn=99999999999999;
void dis_min(){
	cin>>a>>b>>c;
    minn=abs(a-b)+abs(a-c)+abs(b-c);
    
    for(int i=-1;i<=1;i++){
		for(int j=-1;j<=1;j++){
			for(int k=-1;k<=1;k++){
				ll temp = abs(a-b+i-j) + abs(a-c+i-k) +abs(b-c+j-k);
                minn=min(temp,minn);
            }
        }
    }
    cout<<minn<<endl;
}
int main(){	
	ll t;
    cin>>t;
    while(t--){
		dis_min();
    }
	return 0;
}