unorder

#include

#include

#include

#include

#include

using namespace std;

int main()

{

vector>v;

vectorv1;

vectorv2;

vectorv3;

for(int i =0;i<3;i++)

{

v1.push_back(i);

v2.push_back(i+1);

v3.push_back(i+2);

}

cout << endl;

v.push_back(v1);

v.push_back(v2);

v.push_back(v3);

for(vector>::iterator it = v.begin();it != v.end();it++)

{

for(vector::iterator vit = (*it).begin();vit != (*it).end();vit++)

{

cout << *vit << " ";

}

cout << endl;

}

cout << endl;

unordered_map >umap;

umap.emplace(1,v1);

cout << umap.size() << endl;

vectorw;

for(auto it = umap[1].begin();it!= umap[1].end();it++)

{

w.push_back(*it) ;

}

for(auto itr = w.begin();itr!=w.end();itr++)

{

cout << *itr << " ";

}

cout << endl;

for(unordered_map>::iterator ptr = umap.begin();ptr!= umap.end();ptr++)

{

cout << ptr->first << ":";

for(vector::iterator it1 = ptr->second.begin();it1!=ptr->second.end();it1++)

{

cout << *it1 << " ";

}

cout << endl;

}

}