#include <cstdlib>
#include <stdlib.h>
#include <stdio.h>
#include <list>
#include<iostream>

using namespace std;

int main(int argc, char** argv) {

    list<int> *adjV = new list<int>[3];

    adjV[0].push_back(10);
    adjV[0].push_front(20);
    adjV[0].push_back(30);

    adjV[1].push_back(45);
    adjV[1].push_front(55);
    adjV[1].push_back(65);

    adjV[2].push_back(80);
    adjV[2].push_front(90);
    adjV[2].push_back(100);

    for(int i = 0; i < 3; ++i) {
        for (list<int>::iterator it = adjV[i].begin(); it!= adjV[i].end(); ++it){
            cout<<*it<<endl;
        }
    }

    return 0;
}