how to take input in 2d vector in c 2b 2b

1myVector[
2  Vector[0, 4, 2, 5],
3  Vector[1, 4, 2]
4];
5
6/*When you call for myVector[1].size() it would return 3 and [0] would return 4.
7
8For the amount of rows (int vectors) in the 2d vector, you can just use myVector.size()
9
10You can run this to see it in actions*/

1// Initializing 2D vector "vect" with 
2// values 
3vector<vector<int> > vect{ { 1, 2, 3 }, 
4                           { 4, 5, 6 }, 
5                           { 7, 8, 9 } }; 

1std::vector<vector<int>> d;
2//std::vector<int> d;
3cout<<"Enter the N number of ship and port:"<<endl;
4cin>>in;
5cout<<"\Enter preference etc..:\n";
6for(i=0; i<in; i++){ 
7cout<<"ship"<<i+1<<":"<<' ';
8    for(j=0; j<in; j++){
9    cin>>temp;
10    d[i].push_back(temp); 
11    }
12}

1vector<vector<int> > d;
2int val;
3for(int i = 0; i < in; i++){
4    vector<int> temp;
5    for(int j = 0; j < in; j++){
6        cin >> val;
7        temp.push_back(val);
8    }
9    d.push_back(temp);
10    temp.clear();
11}
12From SpyrosD3v25

1vector<vector<int> > d;
2int val;
3for(int i = 0; i < in; i++){
4    vector<int> temp;
5    for(int j = 0; j < in; j++){
6        cin >> val;
7        temp.push_back(val);
8    }
9    d.push_back(temp);
10    temp.clear();
11}
12

1std::vector<vector<int>> d;
2//std::vector<int> d;
3cout<<"Enter the N number of ship and port:"<<endl;
4cin>>in;
5cout<<"\Enter preference etc..:\n";
6for(i=0; i<in; i++){ 
7cout<<"ship"<<i+1<<":"<<' ';
8    for(j=0; j<in; j++){
9    cin>>temp;
10    d.push_back(temp);// I don't know how to push_back here!!
11    }
12}