func_code_string: #include <bits/stdc++.h>   using namespace std;   const int XI = INT_MAX, NI = INT_MIN, MOD = 1e9 + 7;   string s;   int a[400];   int main() {     cin >> s;     for (int i = 0; i < 26; i++) {       a[s[i]]++;     }     for (int i = 25; i < s.length(); i++) {       bool k = 1;       int cnt = 0;       string second =   ;       for (int j =  A ; j <=  Z ; j++) {         if (a[j] > 1) {           k = 0;           break;         }         if (a[j] == 0) {           cnt++;           second += (char)j;         }       }       if (cnt != a[ ? ]) k = 0;       if (k) {         int y = 0;         for (int x = 0; x < i - 25; x++) {           if (s[x] !=  ? )             cout << s[x];           else             cout <<  A ;         }         for (int x = i - 25; x < i + 1; x++) {           if (s[x] !=  ? )             cout << s[x];           else {             cout << second[y];             y++;           }         }         for (int x = i + 1; x < s.length(); x++) {           if (s[x] !=  ? )             cout << s[x];           else             cout <<  A ;         }         cout << endl;         return 0;       }       if (i + 1 == s.size()) break;       a[s[i + 1]]++;       a[s[i - 25]]--;     }     cout << -1 << endl;   }   