#include <iostream>
#include <vector>
#include <algorithm>
#include <math.h>
#include <map>

#define ALL(x) (x).begin(),(x).end()
#define RALL(x) (x).rbegin(),(x).rend()
#define REP(i,a,n) for(int i = (a);i < (n);i++)
#define PI 3.14159265359
#define MOD 1000000007

using namespace std;

int main(){
    int t;
    cin >> t;
    REP(i,0,t){
        string s;
        cin >> s;
        int k = s.length();
        REP(h, 1, k){
            string t = "";
            REP(j, 1, s.length()){
                int a = s[j-1]-'0',b = s[j]-'0';
                a += b;
                a = a/10 + a%10;
                t += to_string(a);
            }
            s = t;
        }
        cout << s << endl;
    }
    return 0;
}