oj.uz

Submission #589530

# Submission time Handle Problem Language Result Execution time Memory
589530 2022-07-04T20:27:18 Z jasmin Newspapers (CEOI21_newspapers) C++14
50 / 100
 67 ms 12288 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long

int bfs(int n, vector<vector<int> >& adi){
    vector<bool> vis(n);
    deque<int> q;
    q.push_back(0);
    int last=0;
    vis[0]=true;
    while(!q.empty()){
        int v=last=q.front();
        q.pop_front();

        for(auto u: adi[v]){
            if(!vis[u]){
                vis[u]=true;
                q.push_back(u);
            }
        }
    }
    return last;
}

vector<int> a;
int dfs(int v, int hight, vector<bool>& vis, vector<vector<int> >& adi, bool& pos){
    if(vis[v]){
        return 0;
    }
    vis[v]=true;
    int depth=1;

    if(adi[v].size()>1){
        a.push_back(v);
    }

    int further=0;
    for(auto u: adi[v]){

        int subtree=dfs(u, hight+1, vis, adi, pos);
        depth=max(depth, subtree+1);
        if(subtree>2){
            further++;
        }
        else if(subtree==2 && adi[v].size()>2){
            a.push_back(v);
        }
        
    }
    pos=pos && (further<=1);
    return depth;
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n, m;
    cin >> n >> m;
    vector<vector<int> > adi(n);
    for(int i=0; i<m; i++){
        int a, b;
        cin >> a >> b;
        adi[a-1].push_back(b-1);
        adi[b-1].push_back(a-1);
    }

    bool pos=(m==n-1);
    int root=bfs(n, adi);
    
    vector<bool> vis(n, false);
    dfs(root, 0, vis, adi, pos);

    if(pos){
        cout << "YES\n";
        if(n==1){
            cout << 1 << "\n" << 1 << "\n";
            return 0;
        }
        else if(n==2){
            cout << 2 << "\n" << 1 << " " << 2 << "\n";
            return 0;
        }
        cout << 2*a.size()<< "\n";
        for(int i=0; i<(int)a.size(); i++){
            cout << i+1 << " ";
        }
        for(int i=a.size()-1; i>=0; i--){
            cout << i+1 << " ";
        }
        cout << "\n";
    }
    else{
        cout << "NO\n";
    }
}

Subtask #1
6.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
3 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
4 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
5 Correct 1 ms 212 KB Output is correct
6 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
7 Correct 1 ms 212 KB Output is correct
8 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
9 Correct 1 ms 212 KB Output is correct
10 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
11 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
12 Partially correct 1 ms 320 KB Failed to provide a successful strategy.
13 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
14 Correct 0 ms 316 KB Output is correct
15 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
16 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
17 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
18 Partially correct 0 ms 316 KB Failed to provide a successful strategy.
19 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
20 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
21 Partially correct 1 ms 212 KB Provide a successful but not optimal strategy.
22 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
23 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
24 Partially correct 1 ms 316 KB Failed to provide a successful strategy.
25 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
26 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
27 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
28 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
29 Correct 1 ms 212 KB Output is correct
30 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
31 Partially correct 1 ms 328 KB Failed to provide a successful strategy.
32 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
33 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
34 Correct 1 ms 320 KB Output is correct
35 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
36 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
37 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
38 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
39 Partially correct 0 ms 320 KB Failed to provide a successful strategy.
40 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
41 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
42 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
43 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
44 Partially correct 1 ms 320 KB Failed to provide a successful strategy.
45 Correct 1 ms 324 KB Output is correct
46 Correct 1 ms 320 KB Output is correct
47 Correct 1 ms 324 KB Output is correct
48 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
49 Correct 1 ms 316 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
52 Correct 1 ms 212 KB Output is correct
53 Correct 1 ms 212 KB Output is correct
54 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
55 Correct 0 ms 212 KB Output is correct
56 Correct 0 ms 212 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 1 ms 212 KB Output is correct
61 Correct 0 ms 320 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Correct 1 ms 212 KB Output is correct
64 Correct 0 ms 212 KB Output is correct

Subtask #2
4.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Partially correct 1 ms 320 KB Failed to provide a successful strategy.
3 Partially correct 0 ms 320 KB Failed to provide a successful strategy.
4 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
5 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
6 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
7 Partially correct 1 ms 316 KB Failed to provide a successful strategy.
8 Partially correct 0 ms 320 KB Failed to provide a successful strategy.
9 Partially correct 1 ms 272 KB Failed to provide a successful strategy.
10 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
11 Partially correct 1 ms 468 KB Failed to provide a successful strategy.
12 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
13 Partially correct 1 ms 320 KB Failed to provide a successful strategy.
14 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
15 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
16 Partially correct 1 ms 472 KB Failed to provide a successful strategy.
17 Partially correct 1 ms 472 KB Failed to provide a successful strategy.
18 Partially correct 1 ms 472 KB Failed to provide a successful strategy.
19 Partially correct 1 ms 472 KB Failed to provide a successful strategy.
20 Partially correct 1 ms 468 KB Failed to provide a successful strategy.

Subtask #3
40.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
3 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
4 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
5 Correct 1 ms 212 KB Output is correct
6 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
7 Correct 1 ms 212 KB Output is correct
8 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
9 Correct 1 ms 212 KB Output is correct
10 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
11 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
12 Partially correct 1 ms 320 KB Failed to provide a successful strategy.
13 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
14 Correct 0 ms 316 KB Output is correct
15 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
16 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
17 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
18 Partially correct 0 ms 316 KB Failed to provide a successful strategy.
19 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
20 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
21 Partially correct 1 ms 212 KB Provide a successful but not optimal strategy.
22 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
23 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
24 Partially correct 1 ms 316 KB Failed to provide a successful strategy.
25 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
26 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
27 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
28 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
29 Correct 1 ms 212 KB Output is correct
30 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
31 Partially correct 1 ms 328 KB Failed to provide a successful strategy.
32 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
33 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
34 Correct 1 ms 320 KB Output is correct
35 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
36 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
37 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
38 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
39 Partially correct 0 ms 320 KB Failed to provide a successful strategy.
40 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
41 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
42 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
43 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
44 Partially correct 1 ms 320 KB Failed to provide a successful strategy.
45 Correct 1 ms 324 KB Output is correct
46 Correct 1 ms 320 KB Output is correct
47 Correct 1 ms 324 KB Output is correct
48 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
49 Correct 1 ms 316 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
52 Correct 1 ms 212 KB Output is correct
53 Correct 1 ms 212 KB Output is correct
54 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
55 Correct 0 ms 212 KB Output is correct
56 Correct 0 ms 212 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 1 ms 212 KB Output is correct
61 Correct 0 ms 320 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Correct 1 ms 212 KB Output is correct
64 Correct 0 ms 212 KB Output is correct
65 Correct 1 ms 216 KB Output is correct
66 Partially correct 1 ms 216 KB Failed to provide a successful strategy.
67 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
68 Partially correct 0 ms 216 KB Failed to provide a successful strategy.
69 Correct 0 ms 212 KB Output is correct
70 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
71 Correct 1 ms 216 KB Output is correct
72 Partially correct 1 ms 216 KB Failed to provide a successful strategy.
73 Correct 1 ms 216 KB Output is correct
74 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
75 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
76 Partially correct 1 ms 212 KB Failed to provide a successful strategy.
77 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
78 Correct 1 ms 212 KB Output is correct
79 Correct 1 ms 340 KB Output is correct
80 Correct 1 ms 340 KB Output is correct
81 Correct 1 ms 340 KB Output is correct
82 Correct 1 ms 340 KB Output is correct
83 Correct 1 ms 340 KB Output is correct
84 Correct 1 ms 324 KB Output is correct
85 Correct 1 ms 340 KB Output is correct
86 Correct 1 ms 340 KB Output is correct
87 Correct 1 ms 340 KB Output is correct
88 Correct 1 ms 340 KB Output is correct
89 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
90 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
91 Partially correct 1 ms 320 KB Failed to provide a successful strategy.
92 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
93 Partially correct 1 ms 452 KB Failed to provide a successful strategy.
94 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
95 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
96 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
97 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
98 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
99 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
100 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
101 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
102 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
103 Partially correct 1 ms 456 KB Failed to provide a successful strategy.
104 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
105 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
106 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
107 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
108 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
109 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
110 Partially correct 1 ms 324 KB Failed to provide a successful strategy.
111 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
112 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
113 Partially correct 1 ms 448 KB Failed to provide a successful strategy.
114 Partially correct 1 ms 448 KB Failed to provide a successful strategy.
115 Partially correct 1 ms 320 KB Failed to provide a successful strategy.
116 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
117 Partially correct 1 ms 448 KB Failed to provide a successful strategy.
118 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
119 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
120 Partially correct 1 ms 328 KB Failed to provide a successful strategy.
121 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
122 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
123 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
124 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
125 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
126 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
127 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
128 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
129 Correct 1 ms 340 KB Output is correct
130 Correct 1 ms 324 KB Output is correct
131 Correct 1 ms 340 KB Output is correct
132 Correct 1 ms 340 KB Output is correct
133 Correct 1 ms 340 KB Output is correct
134 Correct 15 ms 3024 KB Output is correct
135 Correct 14 ms 3024 KB Output is correct
136 Correct 32 ms 8932 KB Output is correct
137 Correct 21 ms 5316 KB Output is correct
138 Correct 36 ms 7240 KB Output is correct
139 Correct 66 ms 11988 KB Output is correct
140 Correct 10 ms 2376 KB Output is correct
141 Correct 6 ms 980 KB Output is correct
142 Correct 65 ms 11604 KB Output is correct
143 Correct 67 ms 12288 KB Output is correct
144 Partially correct 1 ms 468 KB Failed to provide a successful strategy.
145 Partially correct 1 ms 468 KB Failed to provide a successful strategy.