func_code_string: #include <bits/stdc++.h>   using namespace std;   const int dx[8] = {-1, -1, -1, 0, 0, 1, 1, 1};   const int dy[8] = {-1, 0, 1, -1, 1, 0, 1, -1};   const int maxn = 1000;   const int mod = 998244353;   int res, sum, r, n;   string s;   int main() {     ios::sync_with_stdio(false);     cin >> s;     for (char c : s) {       r = (c -  0 ) % 3;       sum += r;       ++n;       if (n == 3 || r == 0 || sum % 3 == 0) res++, sum = n = 0;     }     cout << res;   }   