[C/C++] Domandone su Vector

[Poker1]

Ho provato così:

#include <string>
#include <vector>
#include <iostream>

int main()
{

    std::vector<std::string>         _Vect;
    std::vector< std::vector<std::string> > _myVect;

    _Vect.push_back("coding");
    _myVect.push_back(_Vect);
    _Vect.push_back("Prova");
    _myVect[1].push_back(_Vect);

    std::cout << _myVect[1][0] << std::endl;
    std::cout << _myVect[0][0] << std::endl;

 char t; cin >> t;

} 

Ma non funziona