oj.uz

Submission #960243

# Submission time Handle Problem Language Result Execution time Memory
960243 2024-04-10T01:36:16 Z Darren0724 Povjerenstvo (COI22_povjerenstvo) C++17
13 / 100
 212 ms 42000 KB 
#include <bits/stdc++.h>
using namespace std;
#define LCBorz ios_base::sync_with_stdio(false); cin.tie(0);
//#define int long long
#define all(x) x.begin(), x.end()
#define endl '\n'
const int N=500005;
int n,m;
vector<int> vis(N,-1),out(N,0);
vector<int> adj[N];
int32_t main() {
    LCBorz;
    cin>>n>>m;
    for(int i=0;i<m;i++){
        int a,b;cin>>a>>b;
        out[a]++;
        adj[b].push_back(a);
    }
    vector<int> ans1(N,-1);
    queue<int> q;
    for(int i=1;i<=n;i++){
        if(out[i]==0){
            ans1[i]=1;
            q.push(i);
        }
    }
    auto run=[&]()->void {
        while(q.size()){
            int p=q.front();
            q.pop();
            ans1[p]=1;
            for(int j:adj[p]){
                if(ans1[j]==1){
                    cout<<-1<<endl;
                    exit(0);
                }
                if(ans1[j]==-1){
                    for(int j1:adj[j]){
                        out[j1]--;
                        if(out[j1]==0){
                            q.push(j1);
                        }
                    }
                }
                ans1[j]=0;
            }
        }
    };
    run();
    for(int i=1;i<=n;i++){
        if(ans1[i]==-1){
            q.push(i);
            run();
        }
    }
    vector<int> ans;
    for(int i=1;i<=n;i++){
        if(ans1[i]==1){
            ans.push_back(i);
        }
    }
    cout<<ans.size()<<endl;
    for(int j:ans){
        cout<<j<<' ';
    }
    cout<<endl;
    
    return 0;
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 109 ms 39280 KB Output is correct
2 Correct 108 ms 38852 KB Output is correct
3 Correct 8 ms 18012 KB Output is correct
4 Correct 40 ms 25124 KB Output is correct
5 Correct 67 ms 31312 KB Output is correct
6 Correct 101 ms 41536 KB Output is correct
7 Correct 62 ms 22216 KB Output is correct
8 Correct 98 ms 35012 KB Output is correct
9 Correct 172 ms 32144 KB Output is correct
10 Correct 132 ms 38920 KB Output is correct
11 Correct 164 ms 35144 KB Output is correct
12 Correct 180 ms 33176 KB Output is correct
13 Correct 143 ms 33356 KB Output is correct
14 Correct 133 ms 33464 KB Output is correct
15 Correct 127 ms 33404 KB Output is correct
16 Correct 118 ms 33476 KB Output is correct
17 Correct 35 ms 20820 KB Output is correct
18 Correct 59 ms 22616 KB Output is correct

Subtask #2
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 39128 KB Output is correct
2 Correct 106 ms 42000 KB Output is correct
3 Correct 58 ms 22220 KB Output is correct
4 Correct 172 ms 34884 KB Output is correct
5 Correct 212 ms 35096 KB Output is correct
6 Correct 157 ms 34288 KB Output is correct
7 Correct 147 ms 37304 KB Output is correct
8 Correct 140 ms 37192 KB Output is correct
9 Correct 127 ms 37196 KB Output is correct
10 Correct 39 ms 21784 KB Output is correct
11 Incorrect 30 ms 21072 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 18292 KB Output is correct
2 Correct 9 ms 18268 KB Output is correct
3 Correct 9 ms 17980 KB Output is correct
4 Correct 10 ms 18268 KB Output is correct
5 Correct 9 ms 18268 KB Output is correct
6 Correct 9 ms 18268 KB Output is correct
7 Correct 9 ms 18268 KB Output is correct
8 Correct 8 ms 18012 KB Output is correct
9 Correct 8 ms 17940 KB Output is correct
10 Incorrect 8 ms 18012 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #4
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 109 ms 39280 KB Output is correct
2 Correct 108 ms 38852 KB Output is correct
3 Correct 8 ms 18012 KB Output is correct
4 Correct 40 ms 25124 KB Output is correct
5 Correct 67 ms 31312 KB Output is correct
6 Correct 101 ms 41536 KB Output is correct
7 Correct 62 ms 22216 KB Output is correct
8 Correct 98 ms 35012 KB Output is correct
9 Correct 172 ms 32144 KB Output is correct
10 Correct 132 ms 38920 KB Output is correct
11 Correct 164 ms 35144 KB Output is correct
12 Correct 180 ms 33176 KB Output is correct
13 Correct 143 ms 33356 KB Output is correct
14 Correct 133 ms 33464 KB Output is correct
15 Correct 127 ms 33404 KB Output is correct
16 Correct 118 ms 33476 KB Output is correct
17 Correct 35 ms 20820 KB Output is correct
18 Correct 59 ms 22616 KB Output is correct
19 Correct 102 ms 39128 KB Output is correct
20 Correct 106 ms 42000 KB Output is correct
21 Correct 58 ms 22220 KB Output is correct
22 Correct 172 ms 34884 KB Output is correct
23 Correct 212 ms 35096 KB Output is correct
24 Correct 157 ms 34288 KB Output is correct
25 Correct 147 ms 37304 KB Output is correct
26 Correct 140 ms 37192 KB Output is correct
27 Correct 127 ms 37196 KB Output is correct
28 Correct 39 ms 21784 KB Output is correct
29 Incorrect 30 ms 21072 KB Output isn't correct
30 Halted 0 ms 0 KB -