Lang:G++
Edit12345678910111213141516171819202122232425262728293031#include<bits/stdc++.h>using namespace std;int num[30];string s;bool check(int i, int j, int n) {for (int c = 0; c < 26; c++) {int len = j-i+1,t = 0;if (num[c] >= len) {for (int p = i; p <= j; p++) {if (s[p]-'a' != c ) t++;}if (t <= n) return true;}}return false;}int main() {int n;while(cin >> n >> s){int len = s.size();memset(num, 0, sizeof(num));for (int i = 0; i < len; i++) {num[s[i]-'a']++;}int ans = 0;int i = 0,j = 1;while(i < len && j < len) {