답안 #622394

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
622394	2022-08-04T08:45:01 Z	aworue	Newspapers (CEOI21_newspapers)	C++17	100 / 100	2 ms	512 KB

newspapers

#include <bits/stdc++.h>
using ll = long long;
#define int ll
using namespace std;

#define sz(x) (int)(x).size()
#define foru(i, l, r) for(int i = l; i <= r; i++)
#define ford(i, l, r) for(int i = l; i >= r; i--)
#define fi first
#define se second
#define mod 998244353

#define db(x) cerr << __LINE__ << " " << #x << " " << x << "\n"
using vi = vector<int>;
using pi = pair<int, int>;

const int N = 1005;
const int inf = 3e18;

int n, m, par[N], used[N], ok[N];
vi adj[N], ret;

pi dfs(int x, int p = -1){
	pi res(0, x);
	for(auto i : adj[x]){
		if(i == p) continue;
		par[i] = x;
		auto j = dfs(i, x);
		j.fi++;
		res = max(res, j);
	}
	return res;
}

void solve(){
	cin >> n >> m;
	if(n == 1){
		cout << "YES\n1\n1"; return;
	}
	if(n == 2){
		cout << "YES\n2\n1 1"; return;
	}
	if(m != n - 1){
		cout << "NO"; return;
	}
	foru(i, 1, m){
		int u, v; cin >> u >> v;
		adj[u].push_back(v);
		adj[v].push_back(u);
	}
	int o = dfs(1).se;
	int z = dfs(o).se;
	for(int i = z; ; i = par[i]){
		ok[i] = 1; 
		used[i] = 1;
		for(auto j : adj[i]){
			ok[j] = 1;
			for(auto k : adj[j]) ok[k] = 1;
		}
		if(i == o) break;
	}
	if(count(ok + 1, ok + n + 1, 0)){
		cout << "NO"; return;
	}
	for(int i = par[z]; i != o; i = par[i]){
		ret.push_back(i);
		for(auto j : adj[i]){
			if(sz(adj[j]) == 1 or used[j]) continue;
			ret.push_back(j);
			ret.push_back(i);
		}
	}
	cout << "YES\n" << (sz(ret) << 1) << "\n";
	foru(i, 0, sz(ret) - 1) cout << ret[i] << " ";
	ford(i, sz(ret) - 1, 0) cout << ret[i] << " ";
}

signed main(){
	ios_base::sync_with_stdio(0); cin.tie(0);
	int t = 1; // cin >> t;
	while(t--){
		solve();
	}
}

Subtask #1
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	0 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	1 ms	356 KB	Output is correct
17	Correct	0 ms	356 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	0 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	0 ms	352 KB	Output is correct
25	Correct	0 ms	340 KB	Output is correct
26	Correct	0 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	0 ms	340 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	0 ms	352 KB	Output is correct
31	Correct	1 ms	340 KB	Output is correct
32	Correct	1 ms	340 KB	Output is correct
33	Correct	0 ms	340 KB	Output is correct
34	Correct	1 ms	340 KB	Output is correct
35	Correct	0 ms	340 KB	Output is correct
36	Correct	0 ms	340 KB	Output is correct
37	Correct	0 ms	340 KB	Output is correct
38	Correct	1 ms	340 KB	Output is correct
39	Correct	1 ms	340 KB	Output is correct
40	Correct	0 ms	340 KB	Output is correct
41	Correct	0 ms	340 KB	Output is correct
42	Correct	0 ms	340 KB	Output is correct
43	Correct	0 ms	340 KB	Output is correct
44	Correct	1 ms	340 KB	Output is correct
45	Correct	0 ms	340 KB	Output is correct
46	Correct	0 ms	340 KB	Output is correct
47	Correct	0 ms	340 KB	Output is correct
48	Correct	0 ms	340 KB	Output is correct
49	Correct	1 ms	340 KB	Output is correct
50	Correct	1 ms	352 KB	Output is correct
51	Correct	0 ms	340 KB	Output is correct
52	Correct	1 ms	340 KB	Output is correct
53	Correct	1 ms	340 KB	Output is correct
54	Correct	1 ms	340 KB	Output is correct
55	Correct	1 ms	340 KB	Output is correct
56	Correct	1 ms	340 KB	Output is correct
57	Correct	1 ms	340 KB	Output is correct
58	Correct	0 ms	352 KB	Output is correct
59	Correct	0 ms	348 KB	Output is correct
60	Correct	1 ms	340 KB	Output is correct
61	Correct	1 ms	340 KB	Output is correct
62	Correct	0 ms	340 KB	Output is correct
63	Correct	0 ms	340 KB	Output is correct
64	Correct	0 ms	340 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	468 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	468 KB	Output is correct
17	Correct	1 ms	468 KB	Output is correct
18	Correct	1 ms	468 KB	Output is correct
19	Correct	1 ms	468 KB	Output is correct
20	Correct	1 ms	468 KB	Output is correct

Subtask #3
80.0 / 80.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	0 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	1 ms	356 KB	Output is correct
17	Correct	0 ms	356 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	0 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	0 ms	352 KB	Output is correct
25	Correct	0 ms	340 KB	Output is correct
26	Correct	0 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	0 ms	340 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	0 ms	352 KB	Output is correct
31	Correct	1 ms	340 KB	Output is correct
32	Correct	1 ms	340 KB	Output is correct
33	Correct	0 ms	340 KB	Output is correct
34	Correct	1 ms	340 KB	Output is correct
35	Correct	0 ms	340 KB	Output is correct
36	Correct	0 ms	340 KB	Output is correct
37	Correct	0 ms	340 KB	Output is correct
38	Correct	1 ms	340 KB	Output is correct
39	Correct	1 ms	340 KB	Output is correct
40	Correct	0 ms	340 KB	Output is correct
41	Correct	0 ms	340 KB	Output is correct
42	Correct	0 ms	340 KB	Output is correct
43	Correct	0 ms	340 KB	Output is correct
44	Correct	1 ms	340 KB	Output is correct
45	Correct	0 ms	340 KB	Output is correct
46	Correct	0 ms	340 KB	Output is correct
47	Correct	0 ms	340 KB	Output is correct
48	Correct	0 ms	340 KB	Output is correct
49	Correct	1 ms	340 KB	Output is correct
50	Correct	1 ms	352 KB	Output is correct
51	Correct	0 ms	340 KB	Output is correct
52	Correct	1 ms	340 KB	Output is correct
53	Correct	1 ms	340 KB	Output is correct
54	Correct	1 ms	340 KB	Output is correct
55	Correct	1 ms	340 KB	Output is correct
56	Correct	1 ms	340 KB	Output is correct
57	Correct	1 ms	340 KB	Output is correct
58	Correct	0 ms	352 KB	Output is correct
59	Correct	0 ms	348 KB	Output is correct
60	Correct	1 ms	340 KB	Output is correct
61	Correct	1 ms	340 KB	Output is correct
62	Correct	0 ms	340 KB	Output is correct
63	Correct	0 ms	340 KB	Output is correct
64	Correct	0 ms	340 KB	Output is correct
65	Correct	1 ms	340 KB	Output is correct
66	Correct	0 ms	340 KB	Output is correct
67	Correct	0 ms	340 KB	Output is correct
68	Correct	0 ms	352 KB	Output is correct
69	Correct	0 ms	340 KB	Output is correct
70	Correct	1 ms	352 KB	Output is correct
71	Correct	1 ms	340 KB	Output is correct
72	Correct	1 ms	340 KB	Output is correct
73	Correct	1 ms	356 KB	Output is correct
74	Correct	1 ms	352 KB	Output is correct
75	Correct	1 ms	340 KB	Output is correct
76	Correct	1 ms	340 KB	Output is correct
77	Correct	1 ms	340 KB	Output is correct
78	Correct	0 ms	348 KB	Output is correct
79	Correct	1 ms	352 KB	Output is correct
80	Correct	1 ms	468 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	340 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	356 KB	Output is correct
89	Correct	1 ms	344 KB	Output is correct
90	Correct	1 ms	340 KB	Output is correct
91	Correct	1 ms	468 KB	Output is correct
92	Correct	1 ms	340 KB	Output is correct
93	Correct	1 ms	468 KB	Output is correct
94	Correct	1 ms	340 KB	Output is correct
95	Correct	1 ms	468 KB	Output is correct
96	Correct	1 ms	348 KB	Output is correct
97	Correct	1 ms	348 KB	Output is correct
98	Correct	1 ms	468 KB	Output is correct
99	Correct	1 ms	340 KB	Output is correct
100	Correct	1 ms	348 KB	Output is correct
101	Correct	1 ms	340 KB	Output is correct
102	Correct	1 ms	468 KB	Output is correct
103	Correct	1 ms	340 KB	Output is correct
104	Correct	1 ms	340 KB	Output is correct
105	Correct	1 ms	340 KB	Output is correct
106	Correct	1 ms	340 KB	Output is correct
107	Correct	1 ms	340 KB	Output is correct
108	Correct	1 ms	340 KB	Output is correct
109	Correct	1 ms	340 KB	Output is correct
110	Correct	1 ms	340 KB	Output is correct
111	Correct	1 ms	340 KB	Output is correct
112	Correct	1 ms	340 KB	Output is correct
113	Correct	1 ms	340 KB	Output is correct
114	Correct	1 ms	340 KB	Output is correct
115	Correct	1 ms	340 KB	Output is correct
116	Correct	1 ms	340 KB	Output is correct
117	Correct	1 ms	340 KB	Output is correct
118	Correct	1 ms	340 KB	Output is correct
119	Correct	1 ms	348 KB	Output is correct
120	Correct	1 ms	340 KB	Output is correct
121	Correct	1 ms	340 KB	Output is correct
122	Correct	1 ms	340 KB	Output is correct
123	Correct	1 ms	436 KB	Output is correct
124	Correct	1 ms	340 KB	Output is correct
125	Correct	1 ms	340 KB	Output is correct
126	Correct	1 ms	356 KB	Output is correct
127	Correct	1 ms	340 KB	Output is correct
128	Correct	1 ms	468 KB	Output is correct
129	Correct	1 ms	348 KB	Output is correct
130	Correct	1 ms	340 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	1 ms	364 KB	Output is correct
135	Correct	1 ms	340 KB	Output is correct
136	Correct	0 ms	340 KB	Output is correct
137	Correct	0 ms	340 KB	Output is correct
138	Correct	0 ms	364 KB	Output is correct
139	Correct	0 ms	340 KB	Output is correct
140	Correct	1 ms	340 KB	Output is correct
141	Correct	0 ms	340 KB	Output is correct
142	Correct	1 ms	340 KB	Output is correct
143	Correct	1 ms	364 KB	Output is correct
144	Correct	2 ms	512 KB	Output is correct
145	Correct	1 ms	468 KB	Output is correct

답안 #622394

Compilation message

Subtask #1 12.0 / 12.0

Subtask #2 8.0 / 8.0

Subtask #3 80.0 / 80.0

Subtask #1
12.0 / 12.0

Subtask #2
8.0 / 8.0

Subtask #3
80.0 / 80.0