func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string s;     cin >> s;     int n = s.length();     s += s;     int ans = -1;     int len = 1;     for (int i = 1; i < 2 * n; i++) {       if (s[i] != s[i - 1])         len++;       else {         if (len <= n) ans = max(len, ans);         len = 1;       }     }     if (len <= n) ans = max(len, ans);     if (len > n) ans = n;     cout << ans << endl;   }   