Codeforces Round 872 (Div. 2) 1825A - LuoTianyi and the Palindrome String Solution

  

Problem Link :  https://codeforces.com/contest/1825/problem/A

Solution in C++:

1. /// Author : AH_Tonmoy
2. #include <bits/stdc++.h>
3. using namespace std;
4. int32_t main() {
5. ios_base::sync_with_stdio(0);
6. cin.tie(0);
7. int t;
8. cin >> t;
9. while (t--) {
10. string s ;
11. cin >> s ;
12. set<char>st;
13. for ( int i = 0 ; i < s.size() ; i++) {
14. st.insert(s[i]);
15. }
16. if (st.size()== 1 ) cout <<"-1\n";
17. else cout <<s.size()-1 <<"\n";
18. }
19. }