input 2d vector c 2b 2b

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}