oj.uz

Submission #576547

# Submission time Handle Problem Language Result Execution time Memory
576547 2022-06-13T07:33:13 Z 8e7 Newspapers (CEOI21_newspapers) C++17
100 / 100
 69 ms 8212 KB 
//Challenge: Accepted
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
using namespace std;
#ifdef zisk
void debug(){cout << endl;}
template<class T, class ... U> void debug(T a, U ... b){cout << a << " ", debug(b...);}
template<class T> void pary(T l, T r) {
	while (l != r) cout << *l << " ", l++;
	cout << endl;
}
#else
#define debug(...) 0
#define pary(...) 0
#endif
#define ll long long
#define maxn 1005
#define mod 998244353
#define pii pair<int, int>
#define ff first
#define ss second
#define io ios_base::sync_with_stdio(0);cin.tie(0);
vector<int> adj[maxn], g[maxn];

int getdep(int n, int par) {
	int ret = 1;
	for (int v:adj[n]) {
		if (v != par) {
			ret = max(ret, getdep(v, n) + 1);
		}
	}
	return ret;
}

bool path[maxn];
void getpath(int n, int par) {
	path[n] = 1;
	bool to = 0;
	for (int v:g[n]) {
		if (v != par && g[v].size() > 1) {
			getpath(v, n);
			to = 1;
			break;
		}
	}
	if (to == 0) {
		for (int v:g[n]) {
			if (v != par) {
				getpath(v, n);
				break;
			}
		}
	}
}
vector<int> ans;
int last = 0;
void solve(int n, int par) {
	ans.push_back(n);
	last = n;
	for (int v:g[n]) {
		if (v != par && !path[v]) {
			ans.push_back(v);
			ans.push_back(n);
		}
	}
	for (int v:g[n]) {
		if (v != par && path[v]) {
			solve(v, n);
		}
	}
}
int main() {
	io
	int n, m;
	cin >> n >> m;
	for (int i = 0;i < m;i++) {
		int u, v;
		cin >> u >> v;
		adj[u].push_back(v);
		adj[v].push_back(u);
	}
	if (m > n - 1) {
		cout << "NO\n";
		return 0;
	}
	vector<int> nodes;
	for (int i = 1;i <= n;i++) {
		int cnt = 0;
		for (int v:adj[i]) {
			if (getdep(v, i) >= 3) cnt++;
		}
		if (cnt > 2) {
			cout << "NO\n";
			return 0;
		}
		if (adj[i].size() > 1) {
			nodes.push_back(i);
			for (int v:adj[i]) {
				if (adj[v].size() > 1) {
					g[i].push_back(v);
				}
			}
		}
	}	
	cout << "YES\n";
	if (nodes.size() == 0) {
		ans.push_back(1);
		if (n > 1) ans.push_back(1);
	} else if (nodes.size() == 1) {
		ans.push_back(nodes[0]);	
		ans.push_back(nodes[0]);	
	} else {
		if (nodes.size() == 2) {
			getpath(nodes[0], 0), solve(nodes[0], 0);
		} else {
			for (int i:nodes) {
				if (g[i].size() > 1) {
					int cnt = 0;
					for (int v:g[i]) {
						if (g[v].size() > 1) cnt++;
					}
					if (cnt <= 1) {
						int ini = i;
						for (int v:g[i]) {
							if (g[v].size() == 1) ini = v;
						}
						getpath(ini, 0);
						solve(ini, 0);
						break;
					}
				}
			}
		}
		solve(last, 0);
	}
	cout << ans.size() << "\n";
	for (int i:ans) cout << i << " ";
	cout << "\n";
}

Subtask #1
12.0 / 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 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 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 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 364 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 372 KB Output is correct
17 Correct 1 ms 372 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 368 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 368 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 372 KB Output is correct
32 Correct 1 ms 372 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 364 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 0 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 0 ms 340 KB Output is correct
43 Correct 1 ms 368 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 364 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 364 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 372 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 0 ms 364 KB Output is correct
55 Correct 0 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 1 ms 368 KB Output is correct
59 Correct 0 ms 340 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 1 ms 340 KB Output is correct
62 Correct 1 ms 340 KB Output is correct
63 Correct 1 ms 468 KB Output is correct
64 Correct 1 ms 340 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 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 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 10 ms 520 KB Output is correct
12 Correct 4 ms 340 KB Output is correct
13 Correct 5 ms 480 KB Output is correct
14 Correct 6 ms 468 KB Output is correct
15 Correct 7 ms 468 KB Output is correct
16 Correct 12 ms 468 KB Output is correct
17 Correct 12 ms 436 KB Output is correct
18 Correct 11 ms 468 KB Output is correct
19 Correct 12 ms 468 KB Output is correct
20 Correct 13 ms 456 KB Output is correct

Subtask #3
80.0 / 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 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 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 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 364 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 372 KB Output is correct
17 Correct 1 ms 372 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 368 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 368 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 372 KB Output is correct
32 Correct 1 ms 372 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 364 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 0 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 0 ms 340 KB Output is correct
43 Correct 1 ms 368 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 364 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 364 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 372 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 0 ms 364 KB Output is correct
55 Correct 0 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 1 ms 368 KB Output is correct
59 Correct 0 ms 340 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 1 ms 340 KB Output is correct
62 Correct 1 ms 340 KB Output is correct
63 Correct 1 ms 468 KB Output is correct
64 Correct 1 ms 340 KB Output is correct
65 Correct 0 ms 340 KB Output is correct
66 Correct 1 ms 340 KB Output is correct
67 Correct 1 ms 340 KB Output is correct
68 Correct 0 ms 364 KB Output is correct
69 Correct 1 ms 368 KB Output is correct
70 Correct 1 ms 340 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 440 KB Output is correct
74 Correct 1 ms 340 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 1 ms 340 KB Output is correct
79 Correct 1 ms 340 KB Output is correct
80 Correct 1 ms 340 KB Output is correct
81 Correct 1 ms 372 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 368 KB Output is correct
86 Correct 1 ms 340 KB Output is correct
87 Correct 1 ms 372 KB Output is correct
88 Correct 1 ms 368 KB Output is correct
89 Correct 17 ms 432 KB Output is correct
90 Correct 13 ms 468 KB Output is correct
91 Correct 12 ms 468 KB Output is correct
92 Correct 13 ms 416 KB Output is correct
93 Correct 17 ms 368 KB Output is correct
94 Correct 12 ms 420 KB Output is correct
95 Correct 19 ms 568 KB Output is correct
96 Correct 18 ms 432 KB Output is correct
97 Correct 13 ms 532 KB Output is correct
98 Correct 19 ms 420 KB Output is correct
99 Correct 13 ms 428 KB Output is correct
100 Correct 14 ms 416 KB Output is correct
101 Correct 12 ms 468 KB Output is correct
102 Correct 12 ms 368 KB Output is correct
103 Correct 15 ms 468 KB Output is correct
104 Correct 12 ms 468 KB Output is correct
105 Correct 11 ms 468 KB Output is correct
106 Correct 15 ms 420 KB Output is correct
107 Correct 14 ms 432 KB Output is correct
108 Correct 18 ms 468 KB Output is correct
109 Correct 16 ms 468 KB Output is correct
110 Correct 14 ms 420 KB Output is correct
111 Correct 11 ms 468 KB Output is correct
112 Correct 13 ms 468 KB Output is correct
113 Correct 18 ms 440 KB Output is correct
114 Correct 15 ms 468 KB Output is correct
115 Correct 12 ms 468 KB Output is correct
116 Correct 16 ms 468 KB Output is correct
117 Correct 19 ms 436 KB Output is correct
118 Correct 15 ms 468 KB Output is correct
119 Correct 12 ms 468 KB Output is correct
120 Correct 16 ms 420 KB Output is correct
121 Correct 19 ms 468 KB Output is correct
122 Correct 13 ms 468 KB Output is correct
123 Correct 14 ms 416 KB Output is correct
124 Correct 22 ms 420 KB Output is correct
125 Correct 10 ms 432 KB Output is correct
126 Correct 11 ms 468 KB Output is correct
127 Correct 10 ms 468 KB Output is correct
128 Correct 19 ms 428 KB Output is correct
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 372 KB Output is correct
134 Correct 14 ms 1920 KB Output is correct
135 Correct 14 ms 2092 KB Output is correct
136 Correct 31 ms 5368 KB Output is correct
137 Correct 23 ms 3320 KB Output is correct
138 Correct 36 ms 4684 KB Output is correct
139 Correct 61 ms 7876 KB Output is correct
140 Correct 10 ms 1476 KB Output is correct
141 Correct 3 ms 744 KB Output is correct
142 Correct 58 ms 7676 KB Output is correct
143 Correct 69 ms 8212 KB Output is correct
144 Correct 11 ms 468 KB Output is correct
145 Correct 12 ms 464 KB Output is correct