func_code_string: #include <bits/stdc++.h>   using namespace std;   bool mark[100];   int main() {     int n, A[100][100];     cin >> n;     int k = n;     for (int i = 0; i < n; i++)       for (int j = 0; j < n; j++) cin >> A[i][j];     for (int i = 0; i < n; i++)       for (int j = 0; j < n; j++) {         if (A[i][j] == 1 or A[i][j] == 3) {           mark[i] = true;           k--;           j = n;         }       }     cout << k << endl;     for (int i = 0; i < n; i++)       if (!mark[i]) cout << i + 1 <<    ;   }   