oj.uz

Submission #528221

# Submission time Handle Problem Language Result Execution time Memory
528221 2022-02-19T17:29:57 Z Rafi22 Newspapers (CEOI21_newspapers) C++14
50 / 100
 18 ms 484 KB 
#include <bits/stdc++.h>

using namespace std;

#define endl '\n'
#define st first
#define nd second
#define pb push_back
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()
#define ll long long
ll mod=1000000007;
int inf=1000000007;
ll infl=1000000000000000007;

vector<int>G[1007];
int d[1007];
vector<int>res;
bool ok;

void dfs(int v,int o)
{
    bool was=0;
    d[v]=1;
    for(auto u:G[v])
    {
        if(u==o) continue;
        dfs(u,v);
        d[v]=max(d[v],d[u]+1);
        if(d[u]>2)
        {
            if(was) ok=0;
            was=1;
        }
    }
}
void dfs1(int v,int o)
{
    vector<int>V;
    for(auto u:G[v])
    {
        if(u==o) continue;
        if(d[u]>2) dfs1(u,v);
        if(d[u]==2) V.pb(u);
    }
    res.pb(v);
    for(auto x:V)
    {
        res.pb(x);
        res.pb(v);
    }
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n,m,a,b;
    cin>>n>>m;
    if(m!=n-1)
    {
        cout<<"NO"<<endl;
        return 0;
    }
    for(int i=0;i<n-1;i++)
    {
        cin>>a>>b;
        G[a].pb(b);
        G[b].pb(a);
    }
    vector<int>ans;
    bool is=0;
    for(int i=1;i<=n;i++)
    {
        ok=1;
        res.clear();
        dfs(i,0);
        if(ok)
        {
            is=1;
            dfs1(i,0);
            res.pb(i);
            if(sz(ans)==0||sz(res)<sz(ans)) ans=res;
        }
    }
    if(!is) cout<<"NO"<<endl;
    else
    {
        cout<<"YES"<<endl;
        cout<<sz(ans)<<endl;
        for(auto x:ans) cout<<x<<" ";
    }

    return 0;
}

Subtask #1
6.0 / 12.0

# Verdict Execution time Memory Grader output
1 Partially correct 0 ms 332 KB Provide a successful but not optimal strategy.
2 Correct 0 ms 332 KB Output is correct
3 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
4 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
5 Correct 0 ms 332 KB Output is correct
6 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
7 Correct 0 ms 332 KB Output is correct
8 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
9 Correct 1 ms 332 KB Output is correct
10 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
11 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
12 Partially correct 0 ms 204 KB Failed to provide a successful strategy.
13 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
14 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
15 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
16 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
17 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
18 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
19 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
20 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
21 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
22 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
23 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
24 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
25 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
26 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
27 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
28 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
29 Correct 0 ms 332 KB Output is correct
30 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
31 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
32 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
33 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
34 Correct 0 ms 332 KB Output is correct
35 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
36 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
37 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
38 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
39 Partially correct 0 ms 204 KB Failed to provide a successful strategy.
40 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
41 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
42 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
43 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
44 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
45 Correct 0 ms 332 KB Output is correct
46 Correct 0 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
49 Correct 1 ms 332 KB Output is correct
50 Correct 0 ms 332 KB Output is correct
51 Partially correct 0 ms 252 KB Failed to provide a successful strategy.
52 Correct 0 ms 332 KB Output is correct
53 Correct 0 ms 332 KB Output is correct
54 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
55 Correct 1 ms 332 KB Output is correct
56 Correct 0 ms 332 KB Output is correct
57 Correct 0 ms 332 KB Output is correct
58 Correct 0 ms 204 KB Output is correct
59 Correct 0 ms 332 KB Output is correct
60 Correct 0 ms 332 KB Output is correct
61 Correct 0 ms 332 KB Output is correct
62 Correct 0 ms 332 KB Output is correct
63 Correct 1 ms 332 KB Output is correct
64 Correct 0 ms 332 KB Output is correct

Subtask #2
4.0 / 8.0

# Verdict Execution time Memory Grader output
1 Partially correct 0 ms 332 KB Provide a successful but not optimal strategy.
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Partially correct 0 ms 204 KB Failed to provide a successful strategy.
5 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
6 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
7 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
8 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
9 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
10 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
11 Partially correct 11 ms 460 KB Failed to provide a successful strategy.
12 Partially correct 3 ms 424 KB Failed to provide a successful strategy.
13 Partially correct 4 ms 332 KB Failed to provide a successful strategy.
14 Partially correct 5 ms 332 KB Failed to provide a successful strategy.
15 Partially correct 5 ms 332 KB Failed to provide a successful strategy.
16 Partially correct 10 ms 460 KB Failed to provide a successful strategy.
17 Partially correct 10 ms 484 KB Failed to provide a successful strategy.
18 Partially correct 11 ms 484 KB Failed to provide a successful strategy.
19 Partially correct 12 ms 460 KB Failed to provide a successful strategy.
20 Partially correct 10 ms 460 KB Failed to provide a successful strategy.

Subtask #3
40.0 / 80.0

# Verdict Execution time Memory Grader output
1 Partially correct 0 ms 332 KB Provide a successful but not optimal strategy.
2 Correct 0 ms 332 KB Output is correct
3 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
4 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
5 Correct 0 ms 332 KB Output is correct
6 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
7 Correct 0 ms 332 KB Output is correct
8 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
9 Correct 1 ms 332 KB Output is correct
10 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
11 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
12 Partially correct 0 ms 204 KB Failed to provide a successful strategy.
13 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
14 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
15 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
16 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
17 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
18 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
19 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
20 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
21 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
22 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
23 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
24 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
25 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
26 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
27 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
28 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
29 Correct 0 ms 332 KB Output is correct
30 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
31 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
32 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
33 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
34 Correct 0 ms 332 KB Output is correct
35 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
36 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
37 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
38 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
39 Partially correct 0 ms 204 KB Failed to provide a successful strategy.
40 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
41 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
42 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
43 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
44 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
45 Correct 0 ms 332 KB Output is correct
46 Correct 0 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
49 Correct 1 ms 332 KB Output is correct
50 Correct 0 ms 332 KB Output is correct
51 Partially correct 0 ms 252 KB Failed to provide a successful strategy.
52 Correct 0 ms 332 KB Output is correct
53 Correct 0 ms 332 KB Output is correct
54 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
55 Correct 1 ms 332 KB Output is correct
56 Correct 0 ms 332 KB Output is correct
57 Correct 0 ms 332 KB Output is correct
58 Correct 0 ms 204 KB Output is correct
59 Correct 0 ms 332 KB Output is correct
60 Correct 0 ms 332 KB Output is correct
61 Correct 0 ms 332 KB Output is correct
62 Correct 0 ms 332 KB Output is correct
63 Correct 1 ms 332 KB Output is correct
64 Correct 0 ms 332 KB Output is correct
65 Partially correct 1 ms 332 KB Provide a successful but not optimal strategy.
66 Correct 1 ms 332 KB Output is correct
67 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
68 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
69 Correct 1 ms 332 KB Output is correct
70 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
71 Correct 0 ms 332 KB Output is correct
72 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
73 Correct 0 ms 332 KB Output is correct
74 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
75 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
76 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
77 Partially correct 0 ms 204 KB Failed to provide a successful strategy.
78 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
79 Correct 9 ms 364 KB Output is correct
80 Correct 9 ms 332 KB Output is correct
81 Correct 10 ms 332 KB Output is correct
82 Correct 12 ms 332 KB Output is correct
83 Correct 12 ms 368 KB Output is correct
84 Correct 10 ms 332 KB Output is correct
85 Correct 10 ms 332 KB Output is correct
86 Correct 10 ms 368 KB Output is correct
87 Correct 12 ms 368 KB Output is correct
88 Correct 8 ms 332 KB Output is correct
89 Partially correct 15 ms 332 KB Failed to provide a successful strategy.
90 Partially correct 11 ms 420 KB Failed to provide a successful strategy.
91 Partially correct 10 ms 424 KB Failed to provide a successful strategy.
92 Partially correct 8 ms 332 KB Failed to provide a successful strategy.
93 Partially correct 14 ms 332 KB Failed to provide a successful strategy.
94 Partially correct 9 ms 332 KB Failed to provide a successful strategy.
95 Partially correct 16 ms 428 KB Failed to provide a successful strategy.
96 Partially correct 14 ms 332 KB Failed to provide a successful strategy.
97 Partially correct 9 ms 404 KB Failed to provide a successful strategy.
98 Partially correct 18 ms 432 KB Failed to provide a successful strategy.
99 Partially correct 10 ms 424 KB Failed to provide a successful strategy.
100 Partially correct 11 ms 432 KB Failed to provide a successful strategy.
101 Partially correct 10 ms 428 KB Failed to provide a successful strategy.
102 Partially correct 11 ms 432 KB Failed to provide a successful strategy.
103 Partially correct 12 ms 428 KB Failed to provide a successful strategy.
104 Partially correct 8 ms 332 KB Failed to provide a successful strategy.
105 Partially correct 9 ms 428 KB Failed to provide a successful strategy.
106 Partially correct 12 ms 336 KB Failed to provide a successful strategy.
107 Partially correct 9 ms 424 KB Failed to provide a successful strategy.
108 Partially correct 14 ms 436 KB Failed to provide a successful strategy.
109 Partially correct 11 ms 424 KB Failed to provide a successful strategy.
110 Partially correct 11 ms 332 KB Failed to provide a successful strategy.
111 Partially correct 11 ms 332 KB Failed to provide a successful strategy.
112 Partially correct 9 ms 424 KB Failed to provide a successful strategy.
113 Partially correct 15 ms 432 KB Failed to provide a successful strategy.
114 Partially correct 12 ms 428 KB Failed to provide a successful strategy.
115 Partially correct 10 ms 428 KB Failed to provide a successful strategy.
116 Partially correct 11 ms 436 KB Failed to provide a successful strategy.
117 Partially correct 15 ms 332 KB Failed to provide a successful strategy.
118 Partially correct 12 ms 332 KB Failed to provide a successful strategy.
119 Partially correct 11 ms 332 KB Failed to provide a successful strategy.
120 Partially correct 14 ms 332 KB Failed to provide a successful strategy.
121 Partially correct 15 ms 460 KB Failed to provide a successful strategy.
122 Partially correct 10 ms 332 KB Failed to provide a successful strategy.
123 Partially correct 9 ms 332 KB Failed to provide a successful strategy.
124 Partially correct 15 ms 436 KB Failed to provide a successful strategy.
125 Partially correct 8 ms 332 KB Failed to provide a successful strategy.
126 Partially correct 9 ms 424 KB Failed to provide a successful strategy.
127 Partially correct 8 ms 344 KB Failed to provide a successful strategy.
128 Partially correct 14 ms 344 KB Failed to provide a successful strategy.
129 Correct 13 ms 388 KB Output is correct
130 Correct 13 ms 380 KB Output is correct
131 Correct 13 ms 376 KB Output is correct
132 Correct 13 ms 332 KB Output is correct
133 Correct 13 ms 376 KB Output is correct
134 Correct 0 ms 332 KB Output is correct
135 Correct 0 ms 332 KB Output is correct
136 Correct 0 ms 332 KB Output is correct
137 Correct 0 ms 332 KB Output is correct
138 Correct 1 ms 332 KB Output is correct
139 Correct 0 ms 332 KB Output is correct
140 Correct 0 ms 332 KB Output is correct
141 Correct 1 ms 332 KB Output is correct
142 Correct 0 ms 332 KB Output is correct
143 Correct 0 ms 332 KB Output is correct
144 Partially correct 10 ms 460 KB Failed to provide a successful strategy.
145 Partially correct 10 ms 460 KB Failed to provide a successful strategy.