#include <algorithm>
#include <array>
#include <cassert>
#include <iomanip>
#include <iostream>
#include <map>
#include <vector>

using namespace std;

void solve() {
  int n;
  cin >> n;
  int ret = -1;
  for(int lhs = 1; lhs <= 9; lhs++) {
    int cand = 0;
    for(int rhs = lhs; rhs <= 9; rhs++) {
      cand = 10 * cand + rhs;
      if(cand >= n) {
        if(ret == -1 || cand < ret) ret = cand;
      }
    }
  }
  cout << ret << "\n";
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  int t;
  cin >> t;
  while(t--) solve();
}