func_code_string: #include <bits/stdc++.h>   using namespace std;   int cnt[27][1505];   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     string s;     int n, q, m;     char c;     cin >> n;     cin >> s;     for (int i = (0); i <= (25); i++) {       char ch = i +  a ;       for (int j = (0); j <= (n - 1); j++) {         int tot = 0;         int need = 0;         for (int k = (j); k <= (n - 1); k++) {           tot++;           if (s[k] != ch) need++;           cnt[i][need] = max(cnt[i][need], tot);         }       }       for (int j = (1); j <= (n); j++) cnt[i][j] = max(cnt[i][j], cnt[i][j - 1]);     }     cin >> q;     while (q--) {       cin >> m >> c;       cout << cnt[c -  a ][m] <<   n ;     }     return 0;   }   