Submission #956967

#	Time	Username	Problem	Language	Result	Execution time	Memory
956967		LucaIlie	Newspapers (CEOI21_newspapers)	C++17	4 / 100	1 ms	600 KiB

newspapers

#include <bits/stdc++.h>

using namespace std;

const int MAX_N = 1e3;
bool vis[MAX_N + 1], side[MAX_N + 1];
vector<int> adj[MAX_N + 1];

bool checkBipartite( int u ) {
    vis[u] = true;
    bool ok = true;
    for ( int v: adj[u] ) {
        if ( !vis[v] ) {
            side[v] = side[u] ^ 1;
            ok &= checkBipartite( v );
        } else if ( side[v] == side[u] )
            ok = false;
    }

    return ok;
}

int main() {
    int n, m;

    cin >> n >> m;
    for ( int i = 0; i < m; i++ ) {
        int u, v;
        cin >> u >> v;
        adj[u].push_back( v );
        adj[v].push_back( u );
    }

    cout << "YES\n";
    //cout << 2 * n << "\n";
    cout << n << "\n";
    for ( int i = 1; i <= n; i++ )
        cout << i << " ";
    //for ( int i = n; i >= 1; i-- )
        //cout << i << " ";

    return 0;
}

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