func_code_string: #include <bits/stdc++.h>   using namespace std;   int a[105][105];   int main() {     vector<int> v;     int n;     cin >> n;     for (int i = 1; i <= n; i++) {       for (int j = 1; j <= n; j++) cin >> a[i][j];       v.push_back(i);     }     int cnt = 0;     for (int i = 1; i <= n; i++) {       int flag = 0;       for (int j = 1; j <= n; j++) {         if (a[i][j] == 1 || a[i][j] == 3 || a[j][i] == 2 || a[j][i] == 3) {           flag = 1;           v[i - 1] = 0;         }       }       if (flag == 0) cnt++;     }     cout << cnt << endl;     for (auto i = v.begin(); i != v.end(); i++) {       if (*i != 0) cout << *i <<    ;     }     v.clear();   }   