#include<iostream>
#include<iomanip>
#include<map>
#include<set>
#include<string>
#include<algorithm>
#include<cmath>
#include<vector>
#include<queue>
#include<stack>
#include<cstring>
#include<sstream>
using namespace std;
 
#define P(p) cout<<(p)<<endl
#define rep(i,m,n) for(int i = (m); i < (int)(n); i++)
#define rrep(i,m,n) for(int i=(int)(m); i>=(int)(n); i--)
#define vsort(v) sort(v.begin(), v.end());
#define rvsort(v) sort(v.begin(), v.end(),greater<int>());
#define YES cout<<"YES"<< endl
#define NO cout<<"NO"<<endl
#define Yes cout<<"Yes"<<endl
#define No cout<<"No"<<endl  
#define yes cout<<"yes"<<endl
#define no cout<<"no"<<endl
#define ret return
#define lb(v,n) lower_bound(v.begin(),v.end(),n)
#define ub(v,n) upper_bound(v.begin(),v.end(),n)
#define mae(v) max_element(v.begin(),v.end())
#define mie(v) min_element(v.begin(),v.end())
#define INF 0x7FFFFFFF
#define mod 1000000007
typedef long long ll;
////////////////////////////////////////////////////////////

int main(){
	int n;
	cin >> n;
	rep(i,0,n){
		string s;
		cin >> s;
		vector<char> c;
		rep(j,0,s.size()) c.push_back(s[j]);
		vsort(c);
		string M = "" , m = "";
		rep(j,0,s.size()) M += c[j];
		rvsort(c);
		rep(j,0,s.size()) m += c[j];
		
		//cout << M << " " << m << endl;

		cout << stoi(m) - stoi(M) << endl;
	}
	ret 0;
}
