func_code_string: #include <bits/stdc++.h>   using namespace std;   signed main() {     string s;     cin >> s;     long long n = s.size();     long long an = 0;     for (long long i = 0; i < n; i++) {       long long r = INT_MAX;       for (long long j = i; j <= min((long long)(i + 9), n - 1); j++) {         for (long long k = 1; k <= 8; k++) {           if (j + 2 * k < n) {             if (s[j] == s[j + k] and s[j] == s[j + 2 * k]) {               r = min(r, j + 2 * k);             }           }         }       }       if (r != INT_MAX) an = an + n - r;     }     cout << an << endl;   }   