#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<ll> VL;
typedef vector<VL> VVL;
typedef pair<int, int> PII;

#define FOR(i, a, n) for (ll i = (ll)a; i < (ll)n; ++i)
#define REP(i, n) FOR(i, 0, n)
#define ALL(x) x.begin(), x.end()
#define MOD 1000000007
#define INF (1LL<<25)     //33554432
#define PI 3.14159265359
#define EPS 1e-12
//#define int ll

signed main(void)
{
  int t;
  string s[1010];
  cin >> t;
  REP(i, t) cin >> s[i];

  REP(i, t) {
    int a[2][1010];
    REP(j, s[i].size()) a[0][j] = s[i][j] - '0';
    int cnt = s[i].size(), c = 1;
    while(cnt != 1) {
      REP(k, cnt-1) {
        int tmp = a[!c][k] + a[!c][k+1];
        string stmp = to_string(tmp);
        if(stmp.size() == 1)
          a[c][k] = tmp;
        else if(stmp.size() == 2) {
          tmp = stmp[0] - '0' + stmp[1] - '0';
          a[c][k] = tmp;
        }
      }
      c = !c;
      cnt--;
    }
    cout << a[!c][0] << endl;
  }

  return 0;
}