func_code_string: #include <bits/stdc++.h>   using namespace std;   using ll = long long;   using pii = pair<int, int>;   using pll = pair<ll, ll>;   int n, k;   string s;   int main(void) {     ios::sync_with_stdio(false);     cin.tie(0);     int t;     cin >> t;     while (t--) {       cin >> n >> k;       vector<int> alpha(26, 0);       vector<int> cpy(26, 0);       vector<int> cnt(26, 0);       cin >> s;       int ans = 0;       for (char c : s) {         alpha[c -  a ]++;         cpy[c -  a ]++;       }       for (int i = 1; i <= min(n, k); i++)         if (k % i == 0)           for (int l = 1; l <= n; l++) {             int tmp = 0;             for (int a = 0; a < 26; a++) tmp += alpha[a] / l;             if (tmp >= i) ans = max(ans, l * i);           }       cout << ans <<   n ;     }   }   