Submission #1195458

#	Time	Username	Problem	Language	Result	Execution time	Memory
1195458		FIFI_cpp	Povjerenstvo (COI22_povjerenstvo)	C++20	100 / 100	347 ms	60940 KiB

Main

#include <bits/stdc++.h>
#include <iostream>
#include <vector>
#include <algorithm>
#include <numeric>
#include <cstdlib>
#include <cmath>
#include <queue>
#include <stack>
#include <deque>
#include <fstream>
#include <iterator>
#include <set>
#include <map>
#include <unordered_map>
#include <iomanip>
#include <cctype>
#include <string>
#include <cassert>
#include <set>
#include <bitset>
#include <unordered_set>
#include <numeric>

#define all(a) a.begin(), a.end()
#define fast ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define pb push_back
#define ppi pair<int,pair<int,int>>
#define int int64_t

using namespace std;
//    /\_/\
//   (= ._.)
//   / >  \>
// encouraging cat
const int INF = 10000000000000000;
//const int mod = 1000000007;
const int mod = 998244353;
const int MAXN = 500005;
//ifstream fin('xor.in');
//ofstream fout('xor.out');
vector<vector<int>> adj;
vector<vector<int>> rev;
bool visited[MAXN];
int col[MAXN];
signed main()
{
    int n,m;
    cin >> n >> m;
    adj.resize(n);
    rev.resize(n);
    for (int i = 0;i < m;i++)
    {
        int u,v;
        cin >> u >> v;
        u--,v--;
        adj[u].pb(v);
        rev[v].pb(u);
    }
    for (int i = 0;i < n;i++)
    {
        if (col[i] != 0)
        {
            continue;
        }
        col[i] = 1;
        for (auto edge: adj[i])
        {
            col[edge] = 2;
        }
        for (auto edge: rev[i])
        {
            col[edge] = 2;
        }
    }
    vector<int> ans;
    for (int i = 0;i < n;i++)
    {
        if (col[i] == 1)
        {
            ans.pb(i + 1);
        }
    }
    cout << ans.size() << '\n';
    for (int i = 0;i < ans.size();i++)
    {
        cout << ans[i] << " ";
    }
    cout << '\n';
    return 0;
}

• Subtask 1: 13 / 13
• Subtask 2: 21 / 21
• Subtask 3: 33 / 33
• Subtask 4: 33 / 33