Submission #1097516

# Submission time Handle Problem Language Result Execution time Memory
1097516 2024-10-07T14:15:36 Z alexander707070 Newspapers (CEOI21_newspapers) C++14
52 / 100
142 ms 18692 KB
#include<bits/stdc++.h>
#define MAXN 600007
using namespace std;

int n,m,a,b,ver,cnt;
vector<int> v[MAXN];
vector<int> path;

bool dfs(int x,int p,int dep){
    if(dep==1)return true;
    
    for(int i:v[x]){
        if(i==p)continue;
        if(dfs(i,x,dep-1))return true;
    }

    return false;
}

void dfs2(int x,int p){
    if(cnt<ver)path.push_back(x);

    cnt++;

    for(int i:v[x]){
        if(i==p or v[i].size()==1)continue;
        dfs2(i,x);
        if(cnt<ver)path.push_back(x);
    }
}

int main(){

    cin>>n>>m;
    for(int i=1;i<=m;i++){
        cin>>a>>b;
        v[a].push_back(b);
        v[b].push_back(a);
    }

    if(m>n-1){
        cout<<"NO\n";
        return 0;
    }

    for(int i=1;i<=n;i++){
        if(v[i].size()<=2)continue;

        int br=0;
        for(int f:v[i]){
            if(dfs(f,i,3))br++;
        }

        if(br>2){
            cout<<"NO\n";
            return 0;
        }
    }

    cout<<"YES\n";
    if(n==1)cout<<"1\n1\n";
    else if(n==2)cout<<"2\n1 1\n";
    else{
        for(int i=1;i<=n;i++){
            if(v[i].size()>1)ver++;
        }

        ver=3*n;

        for(int i=1;i<=n;i++){            
            if(v[i].size()==1)continue;
            dfs2(i,0);

            cout<<path.size()*2<<"\n";
            for(int f:path)cout<<f<<" ";

            //reverse(path.begin(),path.end());
            for(int f:path)cout<<f<<" ";
            cout<<"\n";

            return 0;
        }
    }

    return 0;
}
# Verdict Execution time Memory Grader output
1 Correct 6 ms 14428 KB Output is correct
2 Correct 6 ms 14508 KB Output is correct
3 Partially correct 10 ms 14360 KB Provide a successful but not optimal strategy.
4 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
5 Correct 6 ms 14428 KB Output is correct
6 Partially correct 7 ms 14424 KB Provide a successful but not optimal strategy.
7 Correct 6 ms 14392 KB Output is correct
8 Partially correct 6 ms 14424 KB Provide a successful but not optimal strategy.
9 Correct 6 ms 14428 KB Output is correct
10 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
11 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
12 Partially correct 6 ms 14424 KB Provide a successful but not optimal strategy.
13 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
14 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
15 Partially correct 6 ms 14384 KB Provide a successful but not optimal strategy.
16 Partially correct 6 ms 14424 KB Provide a successful but not optimal strategy.
17 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
18 Partially correct 6 ms 14532 KB Provide a successful but not optimal strategy.
19 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
20 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
21 Partially correct 6 ms 14424 KB Provide a successful but not optimal strategy.
22 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
23 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
24 Partially correct 6 ms 14480 KB Provide a successful but not optimal strategy.
25 Partially correct 6 ms 14424 KB Provide a successful but not optimal strategy.
26 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
27 Partially correct 7 ms 14508 KB Provide a successful but not optimal strategy.
28 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
29 Correct 6 ms 14428 KB Output is correct
30 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
31 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
32 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
33 Partially correct 6 ms 14452 KB Failed to provide a successful strategy.
34 Correct 6 ms 14532 KB Output is correct
35 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
36 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
37 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
38 Partially correct 6 ms 14384 KB Provide a successful but not optimal strategy.
39 Partially correct 7 ms 14284 KB Provide a successful but not optimal strategy.
40 Partially correct 7 ms 14528 KB Provide a successful but not optimal strategy.
41 Partially correct 6 ms 14484 KB Failed to provide a successful strategy.
42 Partially correct 8 ms 14428 KB Failed to provide a successful strategy.
43 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
44 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
45 Correct 7 ms 14424 KB Output is correct
46 Correct 6 ms 14424 KB Output is correct
47 Correct 6 ms 14428 KB Output is correct
48 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
49 Correct 7 ms 14344 KB Output is correct
50 Correct 6 ms 14428 KB Output is correct
51 Partially correct 6 ms 14276 KB Provide a successful but not optimal strategy.
52 Correct 6 ms 14428 KB Output is correct
53 Correct 7 ms 14428 KB Output is correct
54 Partially correct 9 ms 14428 KB Failed to provide a successful strategy.
55 Correct 10 ms 14428 KB Output is correct
56 Correct 7 ms 14500 KB Output is correct
57 Correct 7 ms 14428 KB Output is correct
58 Correct 7 ms 14428 KB Output is correct
59 Correct 7 ms 14528 KB Output is correct
60 Correct 8 ms 14428 KB Output is correct
61 Correct 7 ms 14424 KB Output is correct
62 Correct 7 ms 14428 KB Output is correct
63 Correct 7 ms 14472 KB Output is correct
64 Correct 8 ms 14680 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 7 ms 14428 KB Output is correct
2 Correct 6 ms 14364 KB Output is correct
3 Correct 7 ms 14428 KB Output is correct
4 Partially correct 7 ms 14528 KB Provide a successful but not optimal strategy.
5 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
6 Partially correct 7 ms 14428 KB Provide a successful but not optimal strategy.
7 Partially correct 7 ms 14428 KB Provide a successful but not optimal strategy.
8 Partially correct 7 ms 14356 KB Provide a successful but not optimal strategy.
9 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
10 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
11 Partially correct 7 ms 14428 KB Provide a successful but not optimal strategy.
12 Partially correct 7 ms 14428 KB Provide a successful but not optimal strategy.
13 Partially correct 7 ms 14424 KB Provide a successful but not optimal strategy.
14 Partially correct 7 ms 14428 KB Provide a successful but not optimal strategy.
15 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
16 Partially correct 7 ms 14428 KB Provide a successful but not optimal strategy.
17 Partially correct 7 ms 14424 KB Provide a successful but not optimal strategy.
18 Partially correct 8 ms 14428 KB Provide a successful but not optimal strategy.
19 Partially correct 7 ms 14424 KB Provide a successful but not optimal strategy.
20 Partially correct 7 ms 14424 KB Provide a successful but not optimal strategy.
# Verdict Execution time Memory Grader output
1 Correct 6 ms 14428 KB Output is correct
2 Correct 6 ms 14508 KB Output is correct
3 Partially correct 10 ms 14360 KB Provide a successful but not optimal strategy.
4 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
5 Correct 6 ms 14428 KB Output is correct
6 Partially correct 7 ms 14424 KB Provide a successful but not optimal strategy.
7 Correct 6 ms 14392 KB Output is correct
8 Partially correct 6 ms 14424 KB Provide a successful but not optimal strategy.
9 Correct 6 ms 14428 KB Output is correct
10 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
11 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
12 Partially correct 6 ms 14424 KB Provide a successful but not optimal strategy.
13 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
14 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
15 Partially correct 6 ms 14384 KB Provide a successful but not optimal strategy.
16 Partially correct 6 ms 14424 KB Provide a successful but not optimal strategy.
17 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
18 Partially correct 6 ms 14532 KB Provide a successful but not optimal strategy.
19 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
20 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
21 Partially correct 6 ms 14424 KB Provide a successful but not optimal strategy.
22 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
23 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
24 Partially correct 6 ms 14480 KB Provide a successful but not optimal strategy.
25 Partially correct 6 ms 14424 KB Provide a successful but not optimal strategy.
26 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
27 Partially correct 7 ms 14508 KB Provide a successful but not optimal strategy.
28 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
29 Correct 6 ms 14428 KB Output is correct
30 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
31 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
32 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
33 Partially correct 6 ms 14452 KB Failed to provide a successful strategy.
34 Correct 6 ms 14532 KB Output is correct
35 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
36 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
37 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
38 Partially correct 6 ms 14384 KB Provide a successful but not optimal strategy.
39 Partially correct 7 ms 14284 KB Provide a successful but not optimal strategy.
40 Partially correct 7 ms 14528 KB Provide a successful but not optimal strategy.
41 Partially correct 6 ms 14484 KB Failed to provide a successful strategy.
42 Partially correct 8 ms 14428 KB Failed to provide a successful strategy.
43 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
44 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
45 Correct 7 ms 14424 KB Output is correct
46 Correct 6 ms 14424 KB Output is correct
47 Correct 6 ms 14428 KB Output is correct
48 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
49 Correct 7 ms 14344 KB Output is correct
50 Correct 6 ms 14428 KB Output is correct
51 Partially correct 6 ms 14276 KB Provide a successful but not optimal strategy.
52 Correct 6 ms 14428 KB Output is correct
53 Correct 7 ms 14428 KB Output is correct
54 Partially correct 9 ms 14428 KB Failed to provide a successful strategy.
55 Correct 10 ms 14428 KB Output is correct
56 Correct 7 ms 14500 KB Output is correct
57 Correct 7 ms 14428 KB Output is correct
58 Correct 7 ms 14428 KB Output is correct
59 Correct 7 ms 14528 KB Output is correct
60 Correct 8 ms 14428 KB Output is correct
61 Correct 7 ms 14424 KB Output is correct
62 Correct 7 ms 14428 KB Output is correct
63 Correct 7 ms 14472 KB Output is correct
64 Correct 8 ms 14680 KB Output is correct
65 Correct 6 ms 14428 KB Output is correct
66 Correct 6 ms 14424 KB Output is correct
67 Partially correct 6 ms 14392 KB Provide a successful but not optimal strategy.
68 Partially correct 6 ms 14528 KB Provide a successful but not optimal strategy.
69 Correct 6 ms 14428 KB Output is correct
70 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
71 Correct 6 ms 14428 KB Output is correct
72 Partially correct 6 ms 14424 KB Provide a successful but not optimal strategy.
73 Correct 6 ms 14428 KB Output is correct
74 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
75 Partially correct 7 ms 14484 KB Provide a successful but not optimal strategy.
76 Partially correct 7 ms 14428 KB Provide a successful but not optimal strategy.
77 Partially correct 8 ms 14444 KB Provide a successful but not optimal strategy.
78 Partially correct 6 ms 14428 KB Provide a successful but not optimal strategy.
79 Correct 7 ms 14500 KB Output is correct
80 Correct 7 ms 14428 KB Output is correct
81 Correct 7 ms 14428 KB Output is correct
82 Correct 10 ms 14428 KB Output is correct
83 Correct 7 ms 14428 KB Output is correct
84 Correct 7 ms 14428 KB Output is correct
85 Correct 6 ms 14428 KB Output is correct
86 Correct 6 ms 14428 KB Output is correct
87 Correct 6 ms 14428 KB Output is correct
88 Correct 7 ms 14424 KB Output is correct
89 Partially correct 7 ms 14472 KB Failed to provide a successful strategy.
90 Partially correct 8 ms 14428 KB Failed to provide a successful strategy.
91 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
92 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
93 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
94 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
95 Partially correct 8 ms 14428 KB Failed to provide a successful strategy.
96 Partially correct 7 ms 14576 KB Failed to provide a successful strategy.
97 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
98 Partially correct 8 ms 14428 KB Failed to provide a successful strategy.
99 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
100 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
101 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
102 Partially correct 7 ms 14424 KB Failed to provide a successful strategy.
103 Partially correct 7 ms 14424 KB Failed to provide a successful strategy.
104 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
105 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
106 Partially correct 6 ms 14424 KB Failed to provide a successful strategy.
107 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
108 Partially correct 6 ms 14428 KB Failed to provide a successful strategy.
109 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
110 Partially correct 7 ms 14680 KB Failed to provide a successful strategy.
111 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
112 Partially correct 7 ms 14424 KB Failed to provide a successful strategy.
113 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
114 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
115 Partially correct 7 ms 14424 KB Failed to provide a successful strategy.
116 Partially correct 6 ms 14424 KB Failed to provide a successful strategy.
117 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
118 Partially correct 7 ms 14424 KB Failed to provide a successful strategy.
119 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
120 Partially correct 7 ms 14424 KB Failed to provide a successful strategy.
121 Partially correct 7 ms 14424 KB Failed to provide a successful strategy.
122 Partially correct 8 ms 14428 KB Failed to provide a successful strategy.
123 Partially correct 8 ms 14428 KB Failed to provide a successful strategy.
124 Partially correct 7 ms 14424 KB Failed to provide a successful strategy.
125 Partially correct 7 ms 14424 KB Failed to provide a successful strategy.
126 Partially correct 7 ms 14424 KB Failed to provide a successful strategy.
127 Partially correct 7 ms 14428 KB Failed to provide a successful strategy.
128 Partially correct 7 ms 14424 KB Failed to provide a successful strategy.
129 Correct 9 ms 14424 KB Output is correct
130 Correct 6 ms 14424 KB Output is correct
131 Correct 11 ms 14500 KB Output is correct
132 Correct 6 ms 14424 KB Output is correct
133 Correct 7 ms 14428 KB Output is correct
134 Correct 29 ms 15452 KB Output is correct
135 Correct 27 ms 15452 KB Output is correct
136 Correct 59 ms 17848 KB Output is correct
137 Correct 45 ms 16468 KB Output is correct
138 Correct 74 ms 16980 KB Output is correct
139 Correct 112 ms 18692 KB Output is correct
140 Correct 21 ms 15196 KB Output is correct
141 Correct 11 ms 14680 KB Output is correct
142 Correct 101 ms 18380 KB Output is correct
143 Correct 142 ms 18352 KB Output is correct
144 Partially correct 7 ms 14424 KB Provide a successful but not optimal strategy.
145 Partially correct 7 ms 14428 KB Provide a successful but not optimal strategy.