{}
#include <iostream>
#include <vector>
using namespace std;
int main() {
cout << "Hello" << endl;
vector<vector<int>> foo{ { 1,2 }, {2, 3} };
vector<int> baa{ 1, 2 };
for(size_t i=0; i<foo.size(); i++) {
bool is_equal = foo[i] == baa;
cout << "foo[" << i << "] == baa: " << is_equal << endl;
}
return 0;
}