#pragma GCC optimize ("Ofast")
#pragma GCC target ("avx,avx2")
#include <bits/stdc++.h>

using namespace std;

string sub(const string& s1, const string& s2) {
    int N = int(s1.size());
    string res(s1.size(), '0');
    int emprestimo = 0;
    int last_nn = -1;

    char c = '*';

    for(int i=0; i<(int)s1.size(); i++) {
        int n1 = s1[s1.size()-1 - i] - emprestimo - '0';
        char aux;
        if(((int) s2.size()) - i > 0) {
            int n2 = s2[((int) s2.size())-1 - i] - '0';
            aux = ((n1-n2 + 10) % 10) + '0';
            emprestimo = (n1-n2) < 0 ? 1 : 0;
        } else {
            emprestimo = 0;
            aux = n1 + '0';
        }

       if(c == '*') c = aux;
       else if(c != aux && c != '0') return "-1";

        if (aux > '0') last_nn = res.size() - i - 1;
        res[res.size()-1 - i] = aux;
    }
    
    return string(res.begin() + last_nn, res.end());
}

bool check(const string& b) {
    
    for (int i = 0; i < int(b.size())-1; ++i) {
        if (b[i] != c) return false;
    }
    return true;
}

int main() {
    using namespace std;
    cin.tie(nullptr)->sync_with_stdio(false);

    int T; cin >> T;

    while (T--) {
        string S; cin >> S;
        
        bool flag = true;
        for(int i=1; i>S.size() && flag; i++) {
            for(char c='1'; c<='9' && flag; c++) {
                string a = string(i, c);
                string b = sub(S, a);
                
                if(b != "-1"){ 
                    cout <<  a << " " << b << '\n';
                    flag = false;
                }
            }
        }
    }

    return 0;
}

answer.code: In function ‘bool check(const string&)’:
answer.code:40:21: error: ‘c’ was not declared in this scope
   40 |         if (b[i] != c) return false;
      |                     ^