func_code_string: #include <bits/stdc++.h>   using namespace std;   void FastIO() {     ios_base::sync_with_stdio(false);     cin.tie(0);     cout.precision(20);   }   int main() {     FastIO();     int N;     int A[200][200];     cin >> N;     int Count = 0;     int Cars[1000] = {0};     for (int i = 0; i < N; i++) {       for (int j = 0; j < N; j++) {         cin >> A[i][j];         if (A[i][j] == 0) {           if (Cars[i + 1] == 0) Cars[i + 1] = 100;           if (Cars[j + 1] == 0) Cars[j + 1] = 100;         } else if (A[i][j] == 1) {           Cars[i + 1] = -100;         } else if (A[i][j] == 2)           Cars[j + 1] = -100;         else if (A[i][j] == 3) {           Cars[i + 1] = -100;           Cars[j + 1] = -100;         }       }     }     for (int i = 1; i <= N; i++) {       if (Cars[i] != -100) {         Count++;       }     }     cout << Count << endl;     for (int i = 1; i <= N; i++) {       if (Cars[i] != -100) cout << i <<    ;     }     return 0;   }   