func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long int maxn = 2005;   long long int cnt[26];   long long int n, k;   bool ok(long long int l, long long int k) {     long long int k2 = k % l;     if (k2 == 0) return 1;     if (l % k2 != 0) return cnt[25] >= l;     long long int need = l / k2;     for (long long int i = 25; i >= 0; i--) {       l -= (cnt[i] / need) * need;       if (l <= 0) return 1;     }     return 0;   }   int32_t main() {     long long int t;     cin >> t;     while (t--) {       for (long long int i = 0; i < 26; i++) cnt[i] = 0;       string s;       cin >> n >> k >> s;       for (long long int i = 0; i < n; i++) cnt[s[i] -  a ]++;       sort(cnt, cnt + 26);       long long int ans;       long long int flag = 1;       for (ans = n; ans >= 1; ans--) {         for (long long int i = 1; i * i <= k and flag; i++) {           if (k % i) continue;           if (ok(ans, i)) flag = 0;           if (flag and k / i != i and ok(ans, k / i)) flag = 0;         }         if (flag == 0) break;       }       cout << ans <<   n ;     }   }   