#include <iostream>
#include <vector>
#include <string>
using namespace std;

int main() {
	
	vector<vector<string>> myvect{{"a","b"}, {"a","b"} } ;
	
	std::cout << myvect.size() << endl;

	for (int i = 0; i < myvect.size(); ++i) std::cout << myvect[i].size() << " ";
	std::cout << std::endl;

	std::cout << myvect[1][1] << std::endl;	
	// your code goes here
	return 0;
}