oj.uz

Submission #769197

# Submission time Handle Problem Language Result Execution time Memory
769197 2023-06-29T09:44:58 Z RushB Newspapers (CEOI21_newspapers) C++17
50 / 100
 22 ms 576 KB 
#include "bits/stdc++.h"
#define int long long
#define FOR(i, a, b) for (int i = (a); i < (b); i++)
using namespace std;
const long long INF = 1ll << 60;
const int N = 1000 + 5;
vector<int> adj[N], V[N], order;
bitset<N> leaf;
 
void dfs(int v, int p) {
	V[v] = {0};
	for (auto u: adj[v]) if (u != p) {
		dfs(u, v);
		V[v].push_back(V[u][0] + 1);
	}
	sort(V[v].rbegin(), V[v].rend());
}

void dfs2(int v, int p) {
	order.push_back(v);
	for (auto u: adj[v]) if (u != p && adj[u].size() == 1) {
		order.push_back(u);
		order.push_back(v);
	}
	for (auto u: adj[v]) if (u != p && adj[u].size() > 1)
		dfs(u, v);
}
 
signed main() {
	ios::sync_with_stdio(0), cin.tie(0);
	int n, m;
	cin >> n >> m;
	if (m >= n) {
		cout << "NO\n";
		return 0;
	}
	if (n <= 2) {
		cout << "YES\n";
		cout << n << '\n';
		FOR(i, 0, n) cout << 1 << ' ';
		return 0;
	}
	FOR(i, 1, n) {
		int u, v; cin >> u >> v;	
		u--, v--;
		adj[u].push_back(v);
		adj[v].push_back(u);
	}
	FOR(i, 0, n) leaf[i] = adj[i].size() == 1;
	FOR(i, 0, n) if (!leaf[i]) {
		vector<int> t;
		for (auto u: adj[i]) if (!leaf[u]) t.push_back(u);
		adj[i] = t;
	}
	//is caterpillar?
	FOR(i, 0, n) {
		FOR(j, 0, n) V[j].clear();
		dfs(i, i);
		if (V[i].size() >= 3 && V[i][2] >= 2) {
			cout << "NO\n";
			return 0;
		}
	}
	int rt = -1;
	FOR(i, 0, n) if (!leaf[i] && adj[i].size() <= 1) rt = i;

	cout << "YES\n";
	dfs2(rt, rt);
	cout << order.size() * 2 << '\n';
	for (auto u: order) cout << u + 1 << ' ';
	reverse(order.begin(), order.end());
	for (auto u: order) cout << u + 1 << ' ';
	cout << '\n';
	return 0;
}
//Reading this fills you with ....

Subtask #1
6.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
4 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
5 Correct 0 ms 340 KB Output is correct
6 Partially correct 0 ms 340 KB Provide a successful but not optimal strategy.
7 Correct 1 ms 340 KB Output is correct
8 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
9 Correct 0 ms 340 KB Output is correct
10 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
11 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
12 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
13 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
14 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
15 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
16 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
17 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
18 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
19 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
20 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
21 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
22 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
23 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
24 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
25 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
26 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
27 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
28 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
29 Correct 1 ms 340 KB Output is correct
30 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
31 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
32 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
33 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
34 Correct 0 ms 340 KB Output is correct
35 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
36 Partially correct 1 ms 360 KB Failed to provide a successful strategy.
37 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
38 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
39 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
40 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
41 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
42 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
43 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
44 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
45 Correct 0 ms 340 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 0 ms 340 KB Output is correct
48 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
49 Correct 0 ms 340 KB Output is correct
50 Correct 0 ms 340 KB Output is correct
51 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
52 Correct 0 ms 340 KB Output is correct
53 Correct 0 ms 340 KB Output is correct
54 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
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 340 KB Output is correct
59 Correct 0 ms 340 KB Output is correct
60 Correct 0 ms 340 KB Output is correct
61 Correct 0 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
4.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Partially correct 0 ms 340 KB Provide a successful but not optimal strategy.
5 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
6 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
7 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
8 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
9 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
10 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
11 Partially correct 18 ms 468 KB Failed to provide a successful strategy.
12 Partially correct 6 ms 468 KB Failed to provide a successful strategy.
13 Partially correct 7 ms 468 KB Failed to provide a successful strategy.
14 Partially correct 9 ms 468 KB Failed to provide a successful strategy.
15 Partially correct 9 ms 468 KB Failed to provide a successful strategy.
16 Partially correct 19 ms 564 KB Failed to provide a successful strategy.
17 Partially correct 19 ms 544 KB Failed to provide a successful strategy.
18 Partially correct 20 ms 564 KB Failed to provide a successful strategy.
19 Partially correct 20 ms 468 KB Failed to provide a successful strategy.
20 Partially correct 19 ms 468 KB Failed to provide a successful strategy.

Subtask #3
40.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
4 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
5 Correct 0 ms 340 KB Output is correct
6 Partially correct 0 ms 340 KB Provide a successful but not optimal strategy.
7 Correct 1 ms 340 KB Output is correct
8 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
9 Correct 0 ms 340 KB Output is correct
10 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
11 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
12 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
13 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
14 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
15 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
16 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
17 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
18 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
19 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
20 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
21 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
22 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
23 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
24 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
25 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
26 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
27 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
28 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
29 Correct 1 ms 340 KB Output is correct
30 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
31 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
32 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
33 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
34 Correct 0 ms 340 KB Output is correct
35 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
36 Partially correct 1 ms 360 KB Failed to provide a successful strategy.
37 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
38 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
39 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
40 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
41 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
42 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
43 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
44 Partially correct 1 ms 340 KB Failed to provide a successful strategy.
45 Correct 0 ms 340 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 0 ms 340 KB Output is correct
48 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
49 Correct 0 ms 340 KB Output is correct
50 Correct 0 ms 340 KB Output is correct
51 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
52 Correct 0 ms 340 KB Output is correct
53 Correct 0 ms 340 KB Output is correct
54 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
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 340 KB Output is correct
59 Correct 0 ms 340 KB Output is correct
60 Correct 0 ms 340 KB Output is correct
61 Correct 0 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 0 ms 340 KB Output is correct
66 Correct 0 ms 340 KB Output is correct
67 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
68 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
69 Correct 0 ms 340 KB Output is correct
70 Partially correct 1 ms 340 KB Provide a successful but not optimal strategy.
71 Correct 0 ms 340 KB Output is correct
72 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
73 Correct 0 ms 340 KB Output is correct
74 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
75 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
76 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
77 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
78 Partially correct 0 ms 340 KB Failed to provide a successful strategy.
79 Correct 1 ms 340 KB Output is correct
80 Correct 1 ms 340 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 340 KB Output is correct
89 Partially correct 20 ms 468 KB Failed to provide a successful strategy.
90 Partially correct 13 ms 464 KB Failed to provide a successful strategy.
91 Partially correct 12 ms 468 KB Failed to provide a successful strategy.
92 Partially correct 10 ms 444 KB Failed to provide a successful strategy.
93 Partially correct 16 ms 484 KB Failed to provide a successful strategy.
94 Partially correct 11 ms 464 KB Failed to provide a successful strategy.
95 Partially correct 18 ms 496 KB Failed to provide a successful strategy.
96 Partially correct 17 ms 468 KB Failed to provide a successful strategy.
97 Partially correct 9 ms 460 KB Failed to provide a successful strategy.
98 Partially correct 17 ms 468 KB Failed to provide a successful strategy.
99 Partially correct 13 ms 468 KB Failed to provide a successful strategy.
100 Partially correct 13 ms 468 KB Failed to provide a successful strategy.
101 Partially correct 12 ms 468 KB Failed to provide a successful strategy.
102 Partially correct 13 ms 472 KB Failed to provide a successful strategy.
103 Partially correct 14 ms 468 KB Failed to provide a successful strategy.
104 Partially correct 10 ms 340 KB Failed to provide a successful strategy.
105 Partially correct 13 ms 456 KB Failed to provide a successful strategy.
106 Partially correct 14 ms 480 KB Failed to provide a successful strategy.
107 Partially correct 11 ms 468 KB Failed to provide a successful strategy.
108 Partially correct 17 ms 480 KB Failed to provide a successful strategy.
109 Partially correct 13 ms 468 KB Failed to provide a successful strategy.
110 Partially correct 18 ms 464 KB Failed to provide a successful strategy.
111 Partially correct 11 ms 456 KB Failed to provide a successful strategy.
112 Partially correct 12 ms 468 KB Failed to provide a successful strategy.
113 Partially correct 18 ms 488 KB Failed to provide a successful strategy.
114 Partially correct 14 ms 476 KB Failed to provide a successful strategy.
115 Partially correct 12 ms 476 KB Failed to provide a successful strategy.
116 Partially correct 14 ms 472 KB Failed to provide a successful strategy.
117 Partially correct 22 ms 484 KB Failed to provide a successful strategy.
118 Partially correct 14 ms 472 KB Failed to provide a successful strategy.
119 Partially correct 12 ms 472 KB Failed to provide a successful strategy.
120 Partially correct 15 ms 468 KB Failed to provide a successful strategy.
121 Partially correct 15 ms 480 KB Failed to provide a successful strategy.
122 Partially correct 12 ms 476 KB Failed to provide a successful strategy.
123 Partially correct 11 ms 456 KB Failed to provide a successful strategy.
124 Partially correct 16 ms 468 KB Failed to provide a successful strategy.
125 Partially correct 10 ms 452 KB Failed to provide a successful strategy.
126 Partially correct 11 ms 468 KB Failed to provide a successful strategy.
127 Partially correct 11 ms 464 KB Failed to provide a successful strategy.
128 Partially correct 21 ms 484 KB Failed to provide a successful strategy.
129 Correct 1 ms 340 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 340 KB Output is correct
135 Correct 0 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 340 KB Output is correct
139 Correct 0 ms 340 KB Output is correct
140 Correct 0 ms 340 KB Output is correct
141 Correct 1 ms 340 KB Output is correct
142 Correct 1 ms 340 KB Output is correct
143 Correct 0 ms 340 KB Output is correct
144 Partially correct 20 ms 572 KB Failed to provide a successful strategy.
145 Partially correct 22 ms 576 KB Failed to provide a successful strategy.