func_code_string: #include <bits/stdc++.h>   using namespace std;   long long ans = 0;   string s;   int main() {     ios_base::sync_with_stdio(false);     cin >> s;     int id = -1;     for (int i = 0; i < (int)s.length(); i++) {       for (int j = 1; j <= 4 && i - 2 * j >= 0; j++)         if (s[i] == s[i - j] && s[i - j] == s[i - 2 * j]) id = max(id, i - 2 * j);       ans += id + 1;     }     cout << ans;     return 0;   }   