oj.uz

Submission #590963

# Submission time Handle Problem Language Result Execution time Memory
590963 2022-07-06T16:02:45 Z cheissmart Newspapers (CEOI21_newspapers) C++14
100 / 100
 1 ms 468 KB 
#include <bits/stdc++.h>
#define IO_OP std::ios::sync_with_stdio(0); std::cin.tie(0);
#define F first
#define S second
#define V vector
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define SZ(v) int((v).size())
#define ALL(v) (v).begin(), (v).end()

using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;

string _reset = "\u001b[0m", _yellow = "\u001b[33m", _bold = "\u001b[1m";
void DBG() { cerr << "]" << _reset << endl; }
template<class H, class...T> void DBG(H h, T ...t) {
	cerr << to_string(h);
	if(sizeof ...(t)) cerr << ", ";
	DBG(t...);
}
#ifdef CHEISSMART
#define debug(...) cerr << _yellow << _bold << "Line(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
#else
#define debug(...)
#endif

const int INF = 1e9 + 7, N = 1003;

vi G[N];
int d[N], p[N];
bool onpath[N];

void dfs(int u, int pa = -1, int depth = 0) {
	d[u] = depth, p[u] = pa;
	for(int v:G[u]) if(v != pa)
		dfs(v, u, depth + 1);
}

int mx_depth(int u, int pa) {
	int mx = 0;
	for(int v:G[u]) if(v != pa)
		mx = max(mx, mx_depth(v, u) + 1);
	return mx;
}

signed main()
{
	IO_OP;

	int n, m;
	cin >> n >> m;

	if(m != n - 1) {
		cout << "NO" << '\n';
		return 0;
	}
	if(n == 1) {
		cout << "YES\n" << 1 << "\n" << 1 << '\n';
		return 0;
	}
	if(n == 2) {
		cout << "YES\n" << 2 << '\n' << "1 1\n";
		return 0;
	}

	for(int i = 0; i < m; i++) {
		int u, v;
		cin >> u >> v;
		G[u].PB(v);
		G[v].PB(u);
	}

	dfs(1);
	int s = max_element(d + 1, d + n + 1) - d;
	dfs(s);
	int t = max_element(d + 1, d + n + 1) - d;

	vi path;
	while(SZ(path) == 0 || path.back() != s) {
		path.PB(t);
		onpath[t] = true;
		t = p[t];
	}
	assert(SZ(path) >= 3);
	vi ans;

	for(int i = 1; i < SZ(path) - 1; i++) {
		int u = path[i];
		ans.PB(u);
		for(int v:G[u]) if(!onpath[v]) {
			int tt = mx_depth(v, u);
			if(tt > 1) {
				cout << "NO\n";
				return 0;
			}
			if(tt == 1)
				ans.PB(v), ans.PB(u);
		}
	}
	for(int i = SZ(ans) - 1; i >= 0; i--)
		ans.PB(ans[i]);

	cout << "YES\n";
	cout << SZ(ans) << '\n';
	for(int u:ans) cout << u << " ";
	cout << '\n';

}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 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 352 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 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 1 ms 340 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 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 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 352 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 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 1 ms 356 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 0 ms 352 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 0 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 348 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 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 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 348 KB Output is correct
46 Correct 0 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 0 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 0 ms 340 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 0 ms 340 KB Output is correct
62 Correct 0 ms 356 KB Output is correct
63 Correct 1 ms 340 KB Output is correct
64 Correct 1 ms 348 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 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 1 ms 348 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 352 KB Output is correct
11 Correct 1 ms 340 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 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 352 KB Output is correct
20 Correct 1 ms 340 KB Output is correct

Subtask #3
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 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 352 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 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 1 ms 340 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 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 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 352 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 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 1 ms 356 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 0 ms 352 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 0 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 348 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 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 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 348 KB Output is correct
46 Correct 0 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 0 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 0 ms 340 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 0 ms 340 KB Output is correct
62 Correct 0 ms 356 KB Output is correct
63 Correct 1 ms 340 KB Output is correct
64 Correct 1 ms 348 KB Output is correct
65 Correct 1 ms 340 KB Output is correct
66 Correct 1 ms 340 KB Output is correct
67 Correct 0 ms 340 KB Output is correct
68 Correct 0 ms 340 KB Output is correct
69 Correct 1 ms 340 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 340 KB Output is correct
74 Correct 1 ms 340 KB Output is correct
75 Correct 0 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 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 348 KB Output is correct
82 Correct 1 ms 348 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 352 KB Output is correct
87 Correct 1 ms 340 KB Output is correct
88 Correct 1 ms 352 KB Output is correct
89 Correct 1 ms 340 KB Output is correct
90 Correct 1 ms 340 KB Output is correct
91 Correct 1 ms 340 KB Output is correct
92 Correct 1 ms 340 KB Output is correct
93 Correct 1 ms 340 KB Output is correct
94 Correct 1 ms 340 KB Output is correct
95 Correct 1 ms 340 KB Output is correct
96 Correct 1 ms 340 KB Output is correct
97 Correct 1 ms 352 KB Output is correct
98 Correct 1 ms 340 KB Output is correct
99 Correct 1 ms 340 KB Output is correct
100 Correct 1 ms 340 KB Output is correct
101 Correct 1 ms 340 KB Output is correct
102 Correct 1 ms 352 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 356 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 348 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 468 KB Output is correct
113 Correct 1 ms 340 KB Output is correct
114 Correct 1 ms 352 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 340 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 348 KB Output is correct
123 Correct 1 ms 340 KB Output is correct
124 Correct 1 ms 340 KB Output is correct
125 Correct 1 ms 352 KB Output is correct
126 Correct 1 ms 352 KB Output is correct
127 Correct 1 ms 340 KB Output is correct
128 Correct 1 ms 340 KB Output is correct
129 Correct 1 ms 340 KB Output is correct
130 Correct 1 ms 348 KB Output is correct
131 Correct 1 ms 344 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 360 KB Output is correct
135 Correct 0 ms 340 KB Output is correct
136 Correct 0 ms 340 KB Output is correct
137 Correct 1 ms 340 KB Output is correct
138 Correct 1 ms 340 KB Output is correct
139 Correct 0 ms 356 KB Output is correct
140 Correct 1 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 1 ms 340 KB Output is correct
144 Correct 1 ms 340 KB Output is correct
145 Correct 1 ms 340 KB Output is correct