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Submission #1097518

# Submission time Handle Problem Language Result Execution time Memory
1097518 2024-10-07T14:20:33 Z alexander707070 Newspapers (CEOI21_newspapers) C++14
52 / 100
 136 ms 18772 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){
    path.push_back(x);

    cnt++;

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

int deg[MAXN];

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++){
            deg[i]=v[i].size();

            for(int f:v[i]){
                if(v[f].size()==1)deg[i]--;
            }
        }

        for(int i=1;i<=n;i++){            
            if(v[i].size()==1 or deg[i]>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;
}

Subtask #1
6.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 14424 KB Output is correct
2 Correct 3 ms 14428 KB Output is correct
3 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
4 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
5 Correct 3 ms 14428 KB Output is correct
6 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
7 Correct 3 ms 14428 KB Output is correct
8 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
9 Correct 3 ms 14428 KB Output is correct
10 Partially correct 2 ms 14428 KB Provide a successful but not optimal strategy.
11 Partially correct 4 ms 14428 KB Provide a successful but not optimal strategy.
12 Partially correct 3 ms 14480 KB Provide a successful but not optimal strategy.
13 Partially correct 3 ms 14648 KB Provide a successful but not optimal strategy.
14 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
15 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
16 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
17 Partially correct 3 ms 14532 KB Provide a successful but not optimal strategy.
18 Partially correct 3 ms 14568 KB Provide a successful but not optimal strategy.
19 Partially correct 3 ms 14424 KB Provide a successful but not optimal strategy.
20 Partially correct 4 ms 14424 KB Provide a successful but not optimal strategy.
21 Partially correct 5 ms 14428 KB Provide a successful but not optimal strategy.
22 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
23 Partially correct 3 ms 14496 KB Provide a successful but not optimal strategy.
24 Partially correct 2 ms 14428 KB Provide a successful but not optimal strategy.
25 Partially correct 3 ms 14528 KB Provide a successful but not optimal strategy.
26 Partially correct 3 ms 14648 KB Provide a successful but not optimal strategy.
27 Partially correct 3 ms 14512 KB Provide a successful but not optimal strategy.
28 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
29 Correct 4 ms 14424 KB Output is correct
30 Partially correct 3 ms 14428 KB Failed to provide a successful strategy.
31 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
32 Partially correct 3 ms 14516 KB Provide a successful but not optimal strategy.
33 Partially correct 3 ms 14424 KB Failed to provide a successful strategy.
34 Correct 3 ms 14428 KB Output is correct
35 Partially correct 3 ms 14528 KB Provide a successful but not optimal strategy.
36 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
37 Partially correct 3 ms 14428 KB Failed to provide a successful strategy.
38 Partially correct 3 ms 14428 KB Failed to provide a successful strategy.
39 Partially correct 3 ms 14424 KB Failed to provide a successful strategy.
40 Partially correct 3 ms 14428 KB Failed to provide a successful strategy.
41 Partially correct 4 ms 14428 KB Failed to provide a successful strategy.
42 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
43 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
44 Partially correct 3 ms 14568 KB Failed to provide a successful strategy.
45 Correct 3 ms 14424 KB Output is correct
46 Correct 3 ms 14448 KB Output is correct
47 Correct 3 ms 14428 KB Output is correct
48 Partially correct 3 ms 14428 KB Failed to provide a successful strategy.
49 Correct 3 ms 14428 KB Output is correct
50 Correct 3 ms 14428 KB Output is correct
51 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
52 Correct 3 ms 14428 KB Output is correct
53 Correct 3 ms 14428 KB Output is correct
54 Partially correct 3 ms 14648 KB Failed to provide a successful strategy.
55 Correct 3 ms 14428 KB Output is correct
56 Correct 3 ms 14428 KB Output is correct
57 Correct 3 ms 14428 KB Output is correct
58 Correct 5 ms 14428 KB Output is correct
59 Correct 4 ms 14428 KB Output is correct
60 Correct 3 ms 14652 KB Output is correct
61 Correct 3 ms 14428 KB Output is correct
62 Correct 3 ms 14644 KB Output is correct
63 Correct 3 ms 14428 KB Output is correct
64 Correct 3 ms 14428 KB Output is correct

Subtask #2
6.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14424 KB Output is correct
2 Correct 3 ms 14428 KB Output is correct
3 Correct 3 ms 14424 KB Output is correct
4 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
5 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
6 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
7 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
8 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
9 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
10 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
11 Partially correct 4 ms 14684 KB Provide a successful but not optimal strategy.
12 Partially correct 4 ms 14684 KB Provide a successful but not optimal strategy.
13 Partially correct 3 ms 14680 KB Provide a successful but not optimal strategy.
14 Partially correct 3 ms 14684 KB Provide a successful but not optimal strategy.
15 Partially correct 4 ms 14684 KB Provide a successful but not optimal strategy.
16 Partially correct 4 ms 14660 KB Provide a successful but not optimal strategy.
17 Partially correct 3 ms 14684 KB Provide a successful but not optimal strategy.
18 Partially correct 4 ms 14684 KB Provide a successful but not optimal strategy.
19 Partially correct 5 ms 14684 KB Provide a successful but not optimal strategy.
20 Partially correct 3 ms 14680 KB Provide a successful but not optimal strategy.

Subtask #3
40.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 14424 KB Output is correct
2 Correct 3 ms 14428 KB Output is correct
3 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
4 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
5 Correct 3 ms 14428 KB Output is correct
6 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
7 Correct 3 ms 14428 KB Output is correct
8 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
9 Correct 3 ms 14428 KB Output is correct
10 Partially correct 2 ms 14428 KB Provide a successful but not optimal strategy.
11 Partially correct 4 ms 14428 KB Provide a successful but not optimal strategy.
12 Partially correct 3 ms 14480 KB Provide a successful but not optimal strategy.
13 Partially correct 3 ms 14648 KB Provide a successful but not optimal strategy.
14 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
15 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
16 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
17 Partially correct 3 ms 14532 KB Provide a successful but not optimal strategy.
18 Partially correct 3 ms 14568 KB Provide a successful but not optimal strategy.
19 Partially correct 3 ms 14424 KB Provide a successful but not optimal strategy.
20 Partially correct 4 ms 14424 KB Provide a successful but not optimal strategy.
21 Partially correct 5 ms 14428 KB Provide a successful but not optimal strategy.
22 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
23 Partially correct 3 ms 14496 KB Provide a successful but not optimal strategy.
24 Partially correct 2 ms 14428 KB Provide a successful but not optimal strategy.
25 Partially correct 3 ms 14528 KB Provide a successful but not optimal strategy.
26 Partially correct 3 ms 14648 KB Provide a successful but not optimal strategy.
27 Partially correct 3 ms 14512 KB Provide a successful but not optimal strategy.
28 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
29 Correct 4 ms 14424 KB Output is correct
30 Partially correct 3 ms 14428 KB Failed to provide a successful strategy.
31 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
32 Partially correct 3 ms 14516 KB Provide a successful but not optimal strategy.
33 Partially correct 3 ms 14424 KB Failed to provide a successful strategy.
34 Correct 3 ms 14428 KB Output is correct
35 Partially correct 3 ms 14528 KB Provide a successful but not optimal strategy.
36 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
37 Partially correct 3 ms 14428 KB Failed to provide a successful strategy.
38 Partially correct 3 ms 14428 KB Failed to provide a successful strategy.
39 Partially correct 3 ms 14424 KB Failed to provide a successful strategy.
40 Partially correct 3 ms 14428 KB Failed to provide a successful strategy.
41 Partially correct 4 ms 14428 KB Failed to provide a successful strategy.
42 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
43 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
44 Partially correct 3 ms 14568 KB Failed to provide a successful strategy.
45 Correct 3 ms 14424 KB Output is correct
46 Correct 3 ms 14448 KB Output is correct
47 Correct 3 ms 14428 KB Output is correct
48 Partially correct 3 ms 14428 KB Failed to provide a successful strategy.
49 Correct 3 ms 14428 KB Output is correct
50 Correct 3 ms 14428 KB Output is correct
51 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
52 Correct 3 ms 14428 KB Output is correct
53 Correct 3 ms 14428 KB Output is correct
54 Partially correct 3 ms 14648 KB Failed to provide a successful strategy.
55 Correct 3 ms 14428 KB Output is correct
56 Correct 3 ms 14428 KB Output is correct
57 Correct 3 ms 14428 KB Output is correct
58 Correct 5 ms 14428 KB Output is correct
59 Correct 4 ms 14428 KB Output is correct
60 Correct 3 ms 14652 KB Output is correct
61 Correct 3 ms 14428 KB Output is correct
62 Correct 3 ms 14644 KB Output is correct
63 Correct 3 ms 14428 KB Output is correct
64 Correct 3 ms 14428 KB Output is correct
65 Correct 3 ms 14428 KB Output is correct
66 Correct 3 ms 14428 KB Output is correct
67 Partially correct 2 ms 14428 KB Provide a successful but not optimal strategy.
68 Partially correct 3 ms 14528 KB Provide a successful but not optimal strategy.
69 Correct 3 ms 14428 KB Output is correct
70 Partially correct 2 ms 14428 KB Provide a successful but not optimal strategy.
71 Correct 3 ms 14532 KB Output is correct
72 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
73 Correct 3 ms 14648 KB Output is correct
74 Partially correct 3 ms 14652 KB Provide a successful but not optimal strategy.
75 Partially correct 3 ms 14424 KB Provide a successful but not optimal strategy.
76 Partially correct 3 ms 14424 KB Provide a successful but not optimal strategy.
77 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
78 Partially correct 3 ms 14428 KB Provide a successful but not optimal strategy.
79 Correct 3 ms 14428 KB Output is correct
80 Correct 3 ms 14428 KB Output is correct
81 Correct 3 ms 14428 KB Output is correct
82 Correct 3 ms 14428 KB Output is correct
83 Correct 5 ms 14428 KB Output is correct
84 Correct 3 ms 14684 KB Output is correct
85 Correct 3 ms 14424 KB Output is correct
86 Correct 3 ms 14428 KB Output is correct
87 Correct 3 ms 14668 KB Output is correct
88 Correct 3 ms 14668 KB Output is correct
89 Partially correct 3 ms 14728 KB Failed to provide a successful strategy.
90 Partially correct 3 ms 14684 KB Failed to provide a successful strategy.
91 Partially correct 3 ms 14680 KB Failed to provide a successful strategy.
92 Partially correct 3 ms 14684 KB Failed to provide a successful strategy.
93 Partially correct 3 ms 14680 KB Failed to provide a successful strategy.
94 Partially correct 3 ms 14684 KB Failed to provide a successful strategy.
95 Partially correct 3 ms 14680 KB Failed to provide a successful strategy.
96 Partially correct 4 ms 14684 KB Failed to provide a successful strategy.
97 Partially correct 4 ms 14684 KB Failed to provide a successful strategy.
98 Partially correct 3 ms 14684 KB Failed to provide a successful strategy.
99 Partially correct 4 ms 14684 KB Failed to provide a successful strategy.
100 Partially correct 4 ms 14684 KB Failed to provide a successful strategy.
101 Partially correct 4 ms 14684 KB Failed to provide a successful strategy.
102 Partially correct 4 ms 14684 KB Failed to provide a successful strategy.
103 Partially correct 3 ms 14680 KB Failed to provide a successful strategy.
104 Partially correct 3 ms 14680 KB Failed to provide a successful strategy.
105 Partially correct 4 ms 14936 KB Failed to provide a successful strategy.
106 Partially correct 3 ms 14684 KB Failed to provide a successful strategy.
107 Partially correct 4 ms 14684 KB Failed to provide a successful strategy.
108 Partially correct 5 ms 14684 KB Failed to provide a successful strategy.
109 Partially correct 3 ms 14680 KB Failed to provide a successful strategy.
110 Partially correct 3 ms 14684 KB Failed to provide a successful strategy.
111 Partially correct 3 ms 14684 KB Failed to provide a successful strategy.
112 Partially correct 3 ms 14684 KB Failed to provide a successful strategy.
113 Partially correct 3 ms 14684 KB Failed to provide a successful strategy.
114 Partially correct 4 ms 14684 KB Failed to provide a successful strategy.
115 Partially correct 4 ms 14684 KB Failed to provide a successful strategy.
116 Partially correct 4 ms 14680 KB Failed to provide a successful strategy.
117 Partially correct 4 ms 14684 KB Failed to provide a successful strategy.
118 Partially correct 3 ms 14680 KB Failed to provide a successful strategy.
119 Partially correct 4 ms 14684 KB Failed to provide a successful strategy.
120 Partially correct 4 ms 14684 KB Failed to provide a successful strategy.
121 Partially correct 6 ms 14684 KB Failed to provide a successful strategy.
122 Partially correct 4 ms 14680 KB Failed to provide a successful strategy.
123 Partially correct 4 ms 14684 KB Failed to provide a successful strategy.
124 Partially correct 4 ms 14680 KB Failed to provide a successful strategy.
125 Partially correct 3 ms 14684 KB Failed to provide a successful strategy.
126 Partially correct 3 ms 14680 KB Failed to provide a successful strategy.
127 Partially correct 3 ms 14684 KB Failed to provide a successful strategy.
128 Partially correct 4 ms 14684 KB Failed to provide a successful strategy.
129 Correct 3 ms 14428 KB Output is correct
130 Correct 3 ms 14428 KB Output is correct
131 Correct 3 ms 14528 KB Output is correct
132 Correct 3 ms 14428 KB Output is correct
133 Correct 3 ms 14428 KB Output is correct
134 Correct 27 ms 15480 KB Output is correct
135 Correct 24 ms 15696 KB Output is correct
136 Correct 58 ms 18004 KB Output is correct
137 Correct 44 ms 16464 KB Output is correct
138 Correct 65 ms 16980 KB Output is correct
139 Correct 121 ms 18772 KB Output is correct
140 Correct 19 ms 15196 KB Output is correct
141 Correct 9 ms 14652 KB Output is correct
142 Correct 121 ms 18468 KB Output is correct
143 Correct 136 ms 18516 KB Output is correct
144 Partially correct 4 ms 14684 KB Provide a successful but not optimal strategy.
145 Partially correct 4 ms 14680 KB Provide a successful but not optimal strategy.