func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, sum = 0, cnt = 0;     cin >> n;     int a[n + 1][n + 1];     vector<int> v;     vector<int> v1;     for (int i = 0; i < n; i++) {       for (int j = 0; j < n; j++) {         cin >> a[i][j];       }     }     int no = 0;     for (int i = 0; i < n; i++) {       for (int j = 0; j < n; j++) {         if (a[i][j] == 1 || a[i][j] == 3) {           no = 1;         }       }       if (no != 1) {         v.push_back(i + 1);       }       no = 0;     }     if (v.size() == 0) {       cout <<  0  << endl;       return 0;     }     cout << v.size() << endl;     for (int i = 0; i < v.size(); i++) {       cout << v[i] <<    ;     }     cout << endl;     return 0;   }   