Submission #955481

#	Time	Username	Problem	Language	Result	Execution time	Memory
955481		yoav_s	Newspapers (CEOI21_newspapers)	C++17	4 / 100	1 ms	348 KiB

newspapers

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef vector<ll> v;
typedef vector<v> vv;
typedef vector<vv> vvv;
typedef pair<ll,ll> p;
typedef vector<p> vp;
typedef vector<vp> vvp;
typedef vector<vvp> vvvp;
typedef pair<ll, p> tri;
typedef vector<tri> vtri;
typedef vector<vtri> vvtri;
typedef vector<vvtri> vvvtri;
typedef vector<bool> vb;
typedef vector<vb> vvb;
typedef vector<vvb> vvvb;

#define f first
#define s second
#define pb push_back
#define eb emplace_back
#define all(v) (v).begin(),(v).end()

const ll INF = 1e18;
const ll mod = 1e9 + 7;

int main()
{
    ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
    ll N, M;
    cin >> N >> M;
    vv graph(N);
    for (ll i=  0; i < M; i++)
    {
        ll a, b;
        cin >> a >> b;
        graph[a-1].pb(b-1);
        graph[b-1].pb(a-1);
    }
    cout<<"YES\n";
    if (N == 1)
    {
        cout<<"1\n1\n";
    }
    else if (N == 2 || N == 3)
    {
        cout << "2\n2 2\n";
    }
    else
    {
        cout << 2 * N - 4 << "\n";
        for (ll i = 1; i < N - 1; i++) cout << i + 1 << " ";
        for (ll i = 1; i < N - 1; i++) cout << i + 1 << " ";
        cout << "\n";
    }
    return 0;
}

• Subtask 1: 0 / 12
• Subtask 2: 4 / 8
• Subtask 3: 0 / 80