Language: C++

#include <bits/stdc++.h>                                                                                               │ 31 $
using namespace std;                                                                                                   │ 32     return 0;$
                                                                                                                       │ 33 }$
#define lli long long int                                                                                              │~
#define lliv vector<long long int>                                                                                     │~
                                                                                                                       │~
bool is_batch(string s) {                                                                                              │~
    auto mid = (s.length() - 1) / 2;                                                                                   │~
    for (int i = 0; i < mid; i++) {                                                                                    │~
        if (s[i] != s[mid + 1 + i]) return false;                                                                      │~
    }                                                                                                                  │~
    return true;                                                                                                       │~
}                                                                                                                      │~
                                                                                                                       │~
bool solve(string s) {                                                                                                 │~
    bool b1 = is_batch(s);                                                                                             │~
    bool b2 = is_batch(s.substr(0, (s.length() - 1) / 2));                                                             │~
    bool b3 = is_batch(s.substr((s.length() + 3) / 2, s.size()));                                                      │~
                                                                                                                       │~
    return b1 && b2 && b3;                                                                                             │~
}                                                                                                                      │~
                                                                                                                       │~
int main(void) {                                                                                                       │~
    string s;                                                                                                          │~
    getline(cin, s);                                                                                                   │~
    if (solve(s)) {                                                                                                    │~
        cout << "Yes" << endl;                                                                                         │~
    } else {                                                                                                           │~
        cout << "No" << endl;                                                                                          │~
    }                                                                                                                  │~
                                                                                                                       │~
    return 0;                                                                                                          │~
}

Compiler output:
a.cc:1:120: error: extended character │ is not valid in an identifier
    1 | #include <bits/stdc++.h>                                                                                               │ 31 $
      |                                                                                                                        ^
a.cc:1:120: warning: extra tokens at end of #include directive
    1 | #include <bits/stdc++.h>                                                                                               │ 31 $
      |                                                                                                                        ^
a.cc:2:120: error: extended character │ is not valid in an identifier
    2 | using namespace std;                                                                                                   │ 32     return 0;$
      |                                                                                                                        ^
a.cc:3:120: error: extended character │ is not valid in an identifier
    3 |                                                                                                                        │ 33 }$
      |                                                                                                                        ^
a.cc:4:120: error: extended character │ is not valid in an identifier
    4 | #define lli long long int                                                                                              │~
      |                                                                                                                        ^
a.cc:5:120: error: extended character │ is not valid in an identifier
    5 | #define lliv vector<long long int>                                                                                     │~
      |                                                                                                                        ^
a.cc:6:120: error: extended character │ is not valid in an identifier
    6 |                                                                                                                        │~
      |                                                                                                                        ^
a.cc:7:120: error: extended character │ is not valid in an identifier
    7 | bool is_batch(string s) {                                                                                              │~
      |                                                                                                                        ^
a.cc:8:120: error: extended character │ is not valid in an identifier
    8 |     auto mid = (s.length() - 1) / 2;                                                                                   │~
      |                                                                                                                        ^
a.cc:9:120: error: extended character │ is not valid in an identifier
    9 |     for (int i = 0; i < mid; i++) {                                                                                    │~
      |                                                                                                                        ^
a.cc:10:120: error: extended character │ is not valid in an identifier
   10 |         if (s[i] != s[mid + 1 + i]) return false;                                                                      │~
      |                                                                                                                        ^
a.cc:11:120: error: extended character │ is not valid in an identifier
   11 |     }                                                                                                                  │~
      |                                                                                                                        ^
a.cc:12:120: error: extended character │ is not valid in an identifier
   12 |     return true;                                                                                                       │~
      |                                                                                                                        ^
a.cc:13:120: error: extended character │ is not valid in an identifier
   13 | }                                                                                                                      │~
      |                                                                                                                        ^
a.cc:14:120: error: extended character │ is not valid in an identifier
   14 |                                                                                                                        │~
      |                                                                                                                        ^
a.cc:15:120: error: extended character │ is not valid in an identifier
   15 | bool solve(string s) {                                                                                                 │~
      |                                                                                                                        ^
a.cc:16:120: error: extended character │ is not valid in an identifier
   16 |     bool b1 = is_batch(s);                                                                                             │~
      |                                                                                                                        ^
a.cc:17:120: error: extended character │ is not valid in an identifier
   17 |     bool b2 = is_batch(s.substr(0, (s.length() - 1) / 2));                                                             │~
      |                                                                                                                        ^
a.cc:18:120: error: extended character │ is not valid in an identifier
   18 |     bool b3 = is_batch(s.substr((s.length() + 3) / 2, s.size()));                                                      │~
      |                                                                                                                        ^
a.cc:19:120: error: extended character │ is not valid in an identifier
   19 |                                                                                                                        │~
      |                                                                                                                        ^
a.cc:20:120: error: extended character │ is not valid in an identifier
   20 |     return b1 && b2 && b3;                                                                                             │~
      |                                                                                                                        ^
a.cc:21:120: error: extended character │ is not valid in an identifier
   21 | }                                                                                                                      │~
      |                                                                                                                        ^
a.cc:22:120: error: extended character │ is not valid in an identifier
   22 |                                                                                                                        │~
      |                                                                                                                        ^
a.cc:23:120: error: extended character │ is not valid in an identifier
   23 | int main(void) {                                                                                                       │~
      |                                                                                                                        ^
a.cc:24:120: error: extended character │ is not valid in an identifier
   24 |     string s;                                                                                                          │~
      |                                                                                                                        ^
a.cc:25:120: error: extended character │ is not valid in an identifier
   25 |     getline(cin, s);                                                                                                   │~
      |                                                                                                                        ^
a.cc:26:120: error: extended character │ is not valid in an identifier
   26 |     if (solve(s)) {                                                                                                    │~
      |                                                                                                                        ^
a.cc:27:120: error: extended character │ is not valid in an identifier
   27 |         cout << "Yes" << endl;                                                                                         │~
      |                                                                                                                        ^
a.cc:28:120: error: extended character │ is not valid in an identifier
   28 |     } else {                                                                                                           │~
      |                                                                                                                        ^
a.cc:29:120: error: extended character │ is not valid in an identifier
   29 |         cout << "No" << endl;                                                                                          │~
      |                                                                                                                        ^
a.cc:30:120: error: extended character │ is not valid in an identifier
   30 |     }                                                                                                                  │~