func_code_string: #include <bits/stdc++.h>   using namespace std;   int32_t main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     long long t;     cin >> t;     while (t--) {       string s;       cin >> s;       long long a[26] = {0};       long long cnt = 0;       for (long long i = 0; i < s.size(); i++) {         a[s[i] - 97]++;       }       for (long long i = 0; i < 26; i++) {         if (a[i] <= 2)           cnt += a[i];         else           cnt += 2;       }       cout << cnt / 2 <<   n ;     }     return 0;   }   