Greater Integers

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define nl '\n'
#define io ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)
const int mod = 1000000007;
const int mod2 = 998244353;

// change this
const int N = 500005;

int t, n;
string s;

signed main() {
    io;
    cin >> t;
    while (t--) {
        cin >> s;
        n = s.length();

        string ans = string(n, s[0]);
        if (ans <= s) {
            if (s[0] == '9') ans = string(n+1, '1');
            else ans = string(n, s[0]+1);
        }

        cout << ans << nl;
    }
}

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 2

Verdict: ACCEPTED