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

#define _p(...) (void)printf(__VA_ARGS__)
#define forr(x,arr) for(auto&& x:arr)
#define _overload3(_1,_2,_3,name,...) name
#define _rep2(i,n) _rep3(i,0,n)
#define _rep3(i,a,b) for(int i=int(a);i<int(b);++i)
#define rep(...) _overload3(__VA_ARGS__,_rep3,_rep2,)(__VA_ARGS__)
#define _rrep2(i,n) _rrep3(i,0,n)
#define _rrep3(i,a,b) for(int i=int(b)-1;i>=int(a);i--)
#define rrep(...) _overload3(__VA_ARGS__,_rrep3,_rrep2,)(__VA_ARGS__)
#define ALL(x) (x).begin(), (x).end()
#define BIT(n) (1LL<<(n))
#define SZ(x) ((int)(x).size())
#define fst first
#define snd second
using ll=long long;using pii=pair<int,int>;using vb=vector<bool>;
using vi=vector<int>;using vvi=vector<vi>;using vvvi=vector<vvi>;
using vl=vector<ll>;using vvl=vector<vl>;using vvvl=vector<vvl>;
using vd=vector<double>;using vvd=vector<vd>;using vvvd=vector<vvd>;
using vpii=vector<pii>;using vvpii=vector<vpii>;using vvvpii=vector<vvpii>;
template <typename T> T read() {T t; cin >> t; return t;}

void Main() {
  string S = read<string>();
  int N = SZ(S);
  vl A(N);
  rep(i, N) A[i] = S[i] - '0';

  vl &t = A;

  while (SZ(t) > 1) {
    vl u;
    rep(i, SZ(t)-1) {
      int t1 = t[i] + t[i+1];
      int t2 = 1 + (t1 - 1) % 9;
      u.push_back(t2);
    }
    t = u;
  }

  int ans = 1 + (t[0] - 1) % 9;
  
  cout << ans << endl;
}
int main() {
  cin.tie(nullptr);
  ios::sync_with_stdio(false);
  int T = read<int>();
  while (T--) Main();
  return 0;
}