oj.uz

Submission #786017

# Submission time Handle Problem Language Result Execution time Memory
786017 2023-07-17T22:13:55 Z gagik_2007 Newspapers (CEOI21_newspapers) C++17
75 / 100
 62 ms 18032 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

#define ff first
#define ss second

ll ttt;
const ll INF=1e18;
const ll MOD=1e9+7;
const ll N=300007;
ll n,m,k;
vector<ll>g[N];
ll sz[N];
bool used[N];
ll head[N];

void dfs(int v, int par=-1){
    // cout<<"YOO"<<endl;
    sz[v]=0;
    for(int to:g[v]){
        if(to!=par){
            dfs(to,v);
            sz[v]=max(sz[v],sz[to]+1);
        }
    }
}

bool is_tree(int c, int v, int par=-1){
    used[v]=true;
    head[v]=c;
    bool retval=true;
    for(int to:g[v]){
        if(to!=par){
            if(used[to])retval= false;
            else if(!is_tree(c,to,v))retval= false;
        }
    }
    return retval;
}

void construct(vector<int>& p, int v, int par=-1){
    // cout<<"CONSTRUCT: "<<v<<" "<<par<<endl;
    dfs(v);
    // cout<<"SZ: ";
    // for(int vv=1;vv<=n;vv++)cout<<sz[vv]<<" ";
    // cout<<endl;
    p.push_back(v);
    int u=-1;
    for(int to:g[v]){
        if(to!=par){
            if(sz[to]==1){
                p.push_back(to);
                p.push_back(v);
            }
            else if(sz[to]!=0) u=to;
        }
    }
    if(u!=-1)construct(p,u,v);
}

int find_leaf(int v, int par=-1){
    dfs(v);
    for(int to:g[v]){
        if(to!=par){
            if(sz[to]>=2){
                return find_leaf(to,v);
            }
        }
    }
    for(int to:g[v]){
        if(sz[to]==1)return to;
    }
    return v;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    // freopen("output.txt","w",stdout);
    // freopen("input.txt","r",stdin);
    cin>>n>>m;
    // if(m!=n-1)cout<<"NO\n";
    for(int i=0;i<m;i++){
        int x,y;
        cin>>x>>y;
        g[x].push_back(y);
        g[y].push_back(x);
    }
    for(int v=1;v<=n;v++){
        if(!used[v]&&!is_tree(v,v)){
            cout<<"NO\n";
            return 0;
        }
    }
    for(int v=1;v<=n;v++){
        dfs(v);
        int cnt=0;
        for(int to:g[v]){
            cnt+=(sz[to]>=2);
        }
        if(cnt>2){
            cout<<"NO\n";
            return 0;
        }
    }
    cout<<"YES\n";
    vector<int>p;
    int leaf=find_leaf(1);
    // cout<<"leaf: "<<leaf<<endl;
    construct(p,leaf);
    int len=p.size();
    for(int i=len-1;i>=0;i--){
        p.push_back(p[i]);
    }
    cout<<p.size()<<endl;
    for(int x:p)cout<<x<<" ";
    cout<<endl;
}

Subtask #1
9.0 / 12.0

# Verdict Execution time Memory Grader output
1 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
2 Correct 3 ms 7380 KB Output is correct
3 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
4 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
5 Correct 3 ms 7252 KB Output is correct
6 Partially correct 3 ms 7324 KB Provide a successful but not optimal strategy.
7 Correct 3 ms 7252 KB Output is correct
8 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
9 Correct 5 ms 7252 KB Output is correct
10 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
11 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
12 Partially correct 4 ms 7380 KB Provide a successful but not optimal strategy.
13 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
14 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
15 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
16 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
17 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
18 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
19 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
20 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
21 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
22 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
23 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
24 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
25 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
26 Partially correct 4 ms 7340 KB Provide a successful but not optimal strategy.
27 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
28 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
29 Correct 3 ms 7380 KB Output is correct
30 Partially correct 5 ms 7380 KB Provide a successful but not optimal strategy.
31 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
32 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
33 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
34 Correct 3 ms 7380 KB Output is correct
35 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
36 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
37 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
38 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
39 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
40 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
41 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
42 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
43 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
44 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
45 Correct 3 ms 7380 KB Output is correct
46 Correct 4 ms 7376 KB Output is correct
47 Correct 4 ms 7380 KB Output is correct
48 Partially correct 4 ms 7380 KB Provide a successful but not optimal strategy.
49 Correct 4 ms 7368 KB Output is correct
50 Correct 3 ms 7380 KB Output is correct
51 Partially correct 4 ms 7380 KB Provide a successful but not optimal strategy.
52 Correct 3 ms 7284 KB Output is correct
53 Correct 3 ms 7380 KB Output is correct
54 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
55 Correct 3 ms 7380 KB Output is correct
56 Correct 3 ms 7380 KB Output is correct
57 Correct 3 ms 7380 KB Output is correct
58 Correct 4 ms 7380 KB Output is correct
59 Correct 3 ms 7380 KB Output is correct
60 Correct 3 ms 7380 KB Output is correct
61 Correct 3 ms 7380 KB Output is correct
62 Correct 4 ms 7368 KB Output is correct
63 Correct 3 ms 7368 KB Output is correct
64 Correct 4 ms 7296 KB Output is correct

Subtask #2
6.0 / 8.0

# Verdict Execution time Memory Grader output
1 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
2 Correct 4 ms 7380 KB Output is correct
3 Correct 3 ms 7380 KB Output is correct
4 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
5 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
6 Partially correct 5 ms 7380 KB Provide a successful but not optimal strategy.
7 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
8 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
9 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
10 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
11 Partially correct 25 ms 7488 KB Provide a successful but not optimal strategy.
12 Partially correct 10 ms 7508 KB Provide a successful but not optimal strategy.
13 Partially correct 12 ms 7508 KB Provide a successful but not optimal strategy.
14 Partially correct 15 ms 7456 KB Provide a successful but not optimal strategy.
15 Partially correct 15 ms 7460 KB Provide a successful but not optimal strategy.
16 Partially correct 27 ms 7508 KB Provide a successful but not optimal strategy.
17 Partially correct 27 ms 7556 KB Provide a successful but not optimal strategy.
18 Partially correct 27 ms 7504 KB Provide a successful but not optimal strategy.
19 Partially correct 28 ms 7500 KB Provide a successful but not optimal strategy.
20 Partially correct 27 ms 7508 KB Provide a successful but not optimal strategy.

Subtask #3
60.0 / 80.0

# Verdict Execution time Memory Grader output
1 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
2 Correct 3 ms 7380 KB Output is correct
3 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
4 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
5 Correct 3 ms 7252 KB Output is correct
6 Partially correct 3 ms 7324 KB Provide a successful but not optimal strategy.
7 Correct 3 ms 7252 KB Output is correct
8 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
9 Correct 5 ms 7252 KB Output is correct
10 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
11 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
12 Partially correct 4 ms 7380 KB Provide a successful but not optimal strategy.
13 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
14 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
15 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
16 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
17 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
18 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
19 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
20 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
21 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
22 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
23 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
24 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
25 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
26 Partially correct 4 ms 7340 KB Provide a successful but not optimal strategy.
27 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
28 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
29 Correct 3 ms 7380 KB Output is correct
30 Partially correct 5 ms 7380 KB Provide a successful but not optimal strategy.
31 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
32 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
33 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
34 Correct 3 ms 7380 KB Output is correct
35 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
36 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
37 Partially correct 3 ms 7252 KB Provide a successful but not optimal strategy.
38 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
39 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
40 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
41 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
42 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
43 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
44 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
45 Correct 3 ms 7380 KB Output is correct
46 Correct 4 ms 7376 KB Output is correct
47 Correct 4 ms 7380 KB Output is correct
48 Partially correct 4 ms 7380 KB Provide a successful but not optimal strategy.
49 Correct 4 ms 7368 KB Output is correct
50 Correct 3 ms 7380 KB Output is correct
51 Partially correct 4 ms 7380 KB Provide a successful but not optimal strategy.
52 Correct 3 ms 7284 KB Output is correct
53 Correct 3 ms 7380 KB Output is correct
54 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
55 Correct 3 ms 7380 KB Output is correct
56 Correct 3 ms 7380 KB Output is correct
57 Correct 3 ms 7380 KB Output is correct
58 Correct 4 ms 7380 KB Output is correct
59 Correct 3 ms 7380 KB Output is correct
60 Correct 3 ms 7380 KB Output is correct
61 Correct 3 ms 7380 KB Output is correct
62 Correct 4 ms 7368 KB Output is correct
63 Correct 3 ms 7368 KB Output is correct
64 Correct 4 ms 7296 KB Output is correct
65 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
66 Correct 4 ms 7380 KB Output is correct
67 Partially correct 3 ms 7368 KB Provide a successful but not optimal strategy.
68 Partially correct 4 ms 7324 KB Provide a successful but not optimal strategy.
69 Correct 3 ms 7380 KB Output is correct
70 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
71 Correct 4 ms 7368 KB Output is correct
72 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
73 Correct 4 ms 7380 KB Output is correct
74 Partially correct 4 ms 7380 KB Provide a successful but not optimal strategy.
75 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
76 Partially correct 4 ms 7376 KB Provide a successful but not optimal strategy.
77 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
78 Partially correct 3 ms 7380 KB Provide a successful but not optimal strategy.
79 Correct 4 ms 7380 KB Output is correct
80 Correct 5 ms 7380 KB Output is correct
81 Correct 4 ms 7380 KB Output is correct
82 Correct 3 ms 7380 KB Output is correct
83 Correct 4 ms 7380 KB Output is correct
84 Correct 4 ms 7380 KB Output is correct
85 Correct 3 ms 7380 KB Output is correct
86 Correct 4 ms 7372 KB Output is correct
87 Correct 3 ms 7380 KB Output is correct
88 Correct 4 ms 7380 KB Output is correct
89 Partially correct 18 ms 7472 KB Provide a successful but not optimal strategy.
90 Partially correct 15 ms 7508 KB Provide a successful but not optimal strategy.
91 Partially correct 14 ms 7508 KB Provide a successful but not optimal strategy.
92 Partially correct 12 ms 7500 KB Provide a successful but not optimal strategy.
93 Partially correct 16 ms 7508 KB Provide a successful but not optimal strategy.
94 Partially correct 17 ms 7460 KB Provide a successful but not optimal strategy.
95 Partially correct 19 ms 7508 KB Provide a successful but not optimal strategy.
96 Partially correct 18 ms 7480 KB Provide a successful but not optimal strategy.
97 Partially correct 11 ms 7508 KB Provide a successful but not optimal strategy.
98 Partially correct 15 ms 7476 KB Provide a successful but not optimal strategy.
99 Partially correct 13 ms 7468 KB Provide a successful but not optimal strategy.
100 Partially correct 14 ms 7508 KB Provide a successful but not optimal strategy.
101 Partially correct 14 ms 7508 KB Provide a successful but not optimal strategy.
102 Partially correct 15 ms 7508 KB Provide a successful but not optimal strategy.
103 Partially correct 15 ms 7472 KB Provide a successful but not optimal strategy.
104 Partially correct 15 ms 7508 KB Provide a successful but not optimal strategy.
105 Partially correct 13 ms 7432 KB Provide a successful but not optimal strategy.
106 Partially correct 16 ms 7472 KB Provide a successful but not optimal strategy.
107 Partially correct 12 ms 7508 KB Provide a successful but not optimal strategy.
108 Partially correct 18 ms 7476 KB Provide a successful but not optimal strategy.
109 Partially correct 15 ms 7468 KB Provide a successful but not optimal strategy.
110 Partially correct 14 ms 7508 KB Provide a successful but not optimal strategy.
111 Partially correct 11 ms 7416 KB Provide a successful but not optimal strategy.
112 Partially correct 13 ms 7508 KB Provide a successful but not optimal strategy.
113 Partially correct 18 ms 7508 KB Provide a successful but not optimal strategy.
114 Partially correct 17 ms 7496 KB Provide a successful but not optimal strategy.
115 Partially correct 13 ms 7480 KB Provide a successful but not optimal strategy.
116 Partially correct 15 ms 7476 KB Provide a successful but not optimal strategy.
117 Partially correct 19 ms 7476 KB Provide a successful but not optimal strategy.
118 Partially correct 16 ms 7508 KB Provide a successful but not optimal strategy.
119 Partially correct 12 ms 7472 KB Provide a successful but not optimal strategy.
120 Partially correct 16 ms 7504 KB Provide a successful but not optimal strategy.
121 Partially correct 14 ms 7496 KB Provide a successful but not optimal strategy.
122 Partially correct 13 ms 7508 KB Provide a successful but not optimal strategy.
123 Partially correct 13 ms 7508 KB Provide a successful but not optimal strategy.
124 Partially correct 18 ms 7524 KB Provide a successful but not optimal strategy.
125 Partially correct 12 ms 7508 KB Provide a successful but not optimal strategy.
126 Partially correct 13 ms 7508 KB Provide a successful but not optimal strategy.
127 Partially correct 11 ms 7500 KB Provide a successful but not optimal strategy.
128 Partially correct 16 ms 7472 KB Provide a successful but not optimal strategy.
129 Correct 4 ms 7380 KB Output is correct
130 Correct 4 ms 7380 KB Output is correct
131 Correct 4 ms 7380 KB Output is correct
132 Correct 3 ms 7380 KB Output is correct
133 Correct 4 ms 7380 KB Output is correct
134 Correct 15 ms 9376 KB Output is correct
135 Correct 13 ms 9564 KB Output is correct
136 Correct 33 ms 14996 KB Output is correct
137 Correct 23 ms 11388 KB Output is correct
138 Correct 33 ms 13324 KB Output is correct
139 Correct 55 ms 18032 KB Output is correct
140 Correct 11 ms 8788 KB Output is correct
141 Correct 8 ms 7996 KB Output is correct
142 Correct 61 ms 17544 KB Output is correct
143 Correct 62 ms 17804 KB Output is correct
144 Partially correct 27 ms 7516 KB Provide a successful but not optimal strategy.
145 Partially correct 27 ms 7508 KB Provide a successful but not optimal strategy.