func_code_string: #include <bits/stdc++.h>   using namespace std;   string s;   int t2[2], t[2];   vector<int> type;   int main() {     cin >> s;     int n = s.length();     int c = 1;     while (c < n && s[c] == s[0]) c++;     if (c == n) {       cout <<  0 n ;       return 0;     }     int prev = 0;     for (int i = 1; i < n; i++) {       int ind = (c + i) % n;       if (s[(prev + c) % n] != s[ind]) {         if (i - prev <= 1)           type.push_back(0);         else           type.push_back(1);         prev = i;       }     }     if (n - prev <= 1)       type.push_back(0);     else       type.push_back(1);     c = 1;     while (c < type.size() && type[c] == type[0]) c++;     c %= n;     int ans = 0;     prev = 0;     for (int i = 1; i < type.size(); i++) {       int ind = (c + i) % type.size();       if (type[ind] != type[(prev + c) % type.size()]) {         if (type[(prev + c) % type.size()] == 0)           ans += (i - prev) / 2;         else           ans += i - prev;         prev = i;       }     }     if (type[(prev + c) % type.size()] == 0)       ans += (type.size() - prev) / 2;     else       ans += type.size() - prev;     cout << ans <<   n ;   }   