oj.uz

Submission #171276

# Submission time Handle Problem Language Result Execution time Memory
171276 2019-12-28T07:09:55 Z ruler Railway (BOI17_railway) C++14
100 / 100
 347 ms 33940 KB 
// IOI 2021
#include <bits/stdc++.h>
using namespace std;

#define endl '\n'
#define ends ' '
#define die(x) return cout << x << endl, 0
#define all(v) v.begin(), v.end()
#define sz(x) (int)(x.size())
void debug_out() { cerr << endl; }
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) { cerr << ends << H; debug_out(T...); }
#define debug(...) cerr << "{" << #__VA_ARGS__ << "}:", debug_out(__VA_ARGS__)
typedef long long ll;
typedef pair<int, int> pii;
const ll INF = 1e9;
const ll MOD = 1e9 + 7;

////////////////////////////////////////////////////////////////////

const int N = 1e5 + 5;

int k, SZ[N], S[N], C[N];
vector<int> M[N];
vector<pii> G[N];
vector<int> E;

int DFSZ(int v, int p = 0) {
	SZ[v] = 1;
	for (pii e : G[v]) if (e.second != p) SZ[v] += DFSZ(e.first, e.second);
	return SZ[v];
}
void DFS(int v, int p, map<int, int> &mp) {
	pii bigE = make_pair(0, 0);
	for (pii e : G[v]) if (e.second != p && SZ[e.first] > SZ[bigE.first]) bigE = e;
	if (bigE.first) DFS(bigE.first, bigE.second, mp), C[v] = C[bigE.first];
	map<int, int> tmp;
	for (pii e : G[v]) if (e.second != p && e != bigE) {
		DFS(e.first, e.second, tmp);
		for (pii m : tmp) {
			mp[m.first] += m.second;
			if (mp[m.first] == S[m.first]) C[v]++;
		}
		tmp.clear();
	}
	for (int m : M[v]) if (++mp[m] == S[m]) C[v]++;
	if (k <= sz(mp) - C[v]) E.push_back(p);
}

int main() {

	ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);

	int n, m; cin >> n >> m >> k;
	for (int i = 1; i < n; i++) {
		int v, u; cin >> v >> u;
		G[v].push_back(make_pair(u, i));
		G[u].push_back(make_pair(v, i));
	}
	DFSZ(1);
	for (int i = 1; i <= m; i++) {
		cin >> S[i];
		for (int j = 1; j <= S[i]; j++) {
			int v; cin >> v;
			M[v].push_back(i);
		}
	}
	map<int, int> tmp;
	DFS(1, 0, tmp);
	sort(all(E));
	cout << sz(E) << endl;
	for (int e : E) cout << e << ends;
	cout << endl;

	return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5112 KB Output is correct
2 Correct 13 ms 5624 KB Output is correct
3 Correct 12 ms 5608 KB Output is correct
4 Correct 6 ms 4984 KB Output is correct
5 Correct 7 ms 5032 KB Output is correct
6 Correct 13 ms 6664 KB Output is correct
7 Correct 10 ms 5880 KB Output is correct
8 Correct 11 ms 5624 KB Output is correct
9 Correct 12 ms 5628 KB Output is correct
10 Correct 7 ms 5112 KB Output is correct
11 Correct 1 ms 4984 KB Output is correct
12 Correct 8 ms 5008 KB Output is correct
13 Correct 7 ms 4984 KB Output is correct
14 Correct 7 ms 4984 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5112 KB Output is correct
2 Correct 13 ms 5624 KB Output is correct
3 Correct 12 ms 5608 KB Output is correct
4 Correct 6 ms 4984 KB Output is correct
5 Correct 7 ms 5032 KB Output is correct
6 Correct 13 ms 6664 KB Output is correct
7 Correct 10 ms 5880 KB Output is correct
8 Correct 11 ms 5624 KB Output is correct
9 Correct 12 ms 5628 KB Output is correct
10 Correct 7 ms 5112 KB Output is correct
11 Correct 1 ms 4984 KB Output is correct
12 Correct 8 ms 5008 KB Output is correct
13 Correct 7 ms 4984 KB Output is correct
14 Correct 7 ms 4984 KB Output is correct
15 Correct 44 ms 6648 KB Output is correct
16 Correct 44 ms 6748 KB Output is correct
17 Correct 45 ms 6776 KB Output is correct
18 Correct 14 ms 6648 KB Output is correct
19 Correct 10 ms 5880 KB Output is correct
20 Correct 53 ms 7032 KB Output is correct
21 Correct 53 ms 7032 KB Output is correct
22 Correct 5 ms 5112 KB Output is correct
23 Correct 9 ms 5652 KB Output is correct
24 Correct 13 ms 5624 KB Output is correct
25 Correct 6 ms 4984 KB Output is correct
26 Correct 6 ms 5000 KB Output is correct
27 Correct 14 ms 6644 KB Output is correct
28 Correct 12 ms 5880 KB Output is correct
29 Correct 12 ms 5624 KB Output is correct
30 Correct 13 ms 5752 KB Output is correct
31 Correct 7 ms 5096 KB Output is correct
32 Correct 6 ms 4984 KB Output is correct
33 Correct 7 ms 4984 KB Output is correct
34 Correct 7 ms 4984 KB Output is correct
35 Correct 6 ms 4984 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 162 ms 33940 KB Output is correct
2 Correct 7 ms 4984 KB Output is correct
3 Correct 154 ms 33648 KB Output is correct
4 Correct 151 ms 33244 KB Output is correct
5 Correct 128 ms 31892 KB Output is correct
6 Correct 117 ms 31612 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 139 ms 22904 KB Output is correct
2 Correct 180 ms 16376 KB Output is correct
3 Correct 229 ms 16096 KB Output is correct
4 Correct 259 ms 18424 KB Output is correct
5 Correct 246 ms 16120 KB Output is correct
6 Correct 140 ms 23032 KB Output is correct
7 Correct 139 ms 22892 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 139 ms 22904 KB Output is correct
2 Correct 180 ms 16376 KB Output is correct
3 Correct 229 ms 16096 KB Output is correct
4 Correct 259 ms 18424 KB Output is correct
5 Correct 246 ms 16120 KB Output is correct
6 Correct 140 ms 23032 KB Output is correct
7 Correct 139 ms 22892 KB Output is correct
8 Correct 139 ms 22664 KB Output is correct
9 Correct 134 ms 22796 KB Output is correct
10 Correct 112 ms 31604 KB Output is correct
11 Correct 110 ms 31648 KB Output is correct
12 Correct 99 ms 12280 KB Output is correct
13 Correct 107 ms 12280 KB Output is correct
14 Correct 177 ms 12152 KB Output is correct
15 Correct 171 ms 11888 KB Output is correct
16 Correct 263 ms 18040 KB Output is correct
17 Correct 276 ms 18068 KB Output is correct
18 Correct 289 ms 18400 KB Output is correct
19 Correct 180 ms 14968 KB Output is correct
20 Correct 157 ms 23288 KB Output is correct
21 Correct 164 ms 23332 KB Output is correct
22 Correct 137 ms 23292 KB Output is correct

Subtask #6
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5112 KB Output is correct
2 Correct 13 ms 5624 KB Output is correct
3 Correct 12 ms 5608 KB Output is correct
4 Correct 6 ms 4984 KB Output is correct
5 Correct 7 ms 5032 KB Output is correct
6 Correct 13 ms 6664 KB Output is correct
7 Correct 10 ms 5880 KB Output is correct
8 Correct 11 ms 5624 KB Output is correct
9 Correct 12 ms 5628 KB Output is correct
10 Correct 7 ms 5112 KB Output is correct
11 Correct 1 ms 4984 KB Output is correct
12 Correct 8 ms 5008 KB Output is correct
13 Correct 7 ms 4984 KB Output is correct
14 Correct 7 ms 4984 KB Output is correct
15 Correct 44 ms 6648 KB Output is correct
16 Correct 44 ms 6748 KB Output is correct
17 Correct 45 ms 6776 KB Output is correct
18 Correct 14 ms 6648 KB Output is correct
19 Correct 10 ms 5880 KB Output is correct
20 Correct 53 ms 7032 KB Output is correct
21 Correct 53 ms 7032 KB Output is correct
22 Correct 5 ms 5112 KB Output is correct
23 Correct 9 ms 5652 KB Output is correct
24 Correct 13 ms 5624 KB Output is correct
25 Correct 6 ms 4984 KB Output is correct
26 Correct 6 ms 5000 KB Output is correct
27 Correct 14 ms 6644 KB Output is correct
28 Correct 12 ms 5880 KB Output is correct
29 Correct 12 ms 5624 KB Output is correct
30 Correct 13 ms 5752 KB Output is correct
31 Correct 7 ms 5096 KB Output is correct
32 Correct 6 ms 4984 KB Output is correct
33 Correct 7 ms 4984 KB Output is correct
34 Correct 7 ms 4984 KB Output is correct
35 Correct 6 ms 4984 KB Output is correct
36 Correct 162 ms 33940 KB Output is correct
37 Correct 7 ms 4984 KB Output is correct
38 Correct 154 ms 33648 KB Output is correct
39 Correct 151 ms 33244 KB Output is correct
40 Correct 128 ms 31892 KB Output is correct
41 Correct 117 ms 31612 KB Output is correct
42 Correct 139 ms 22904 KB Output is correct
43 Correct 180 ms 16376 KB Output is correct
44 Correct 229 ms 16096 KB Output is correct
45 Correct 259 ms 18424 KB Output is correct
46 Correct 246 ms 16120 KB Output is correct
47 Correct 140 ms 23032 KB Output is correct
48 Correct 139 ms 22892 KB Output is correct
49 Correct 139 ms 22664 KB Output is correct
50 Correct 134 ms 22796 KB Output is correct
51 Correct 112 ms 31604 KB Output is correct
52 Correct 110 ms 31648 KB Output is correct
53 Correct 99 ms 12280 KB Output is correct
54 Correct 107 ms 12280 KB Output is correct
55 Correct 177 ms 12152 KB Output is correct
56 Correct 171 ms 11888 KB Output is correct
57 Correct 263 ms 18040 KB Output is correct
58 Correct 276 ms 18068 KB Output is correct
59 Correct 289 ms 18400 KB Output is correct
60 Correct 180 ms 14968 KB Output is correct
61 Correct 157 ms 23288 KB Output is correct
62 Correct 164 ms 23332 KB Output is correct
63 Correct 137 ms 23292 KB Output is correct
64 Correct 137 ms 23732 KB Output is correct
65 Correct 267 ms 16100 KB Output is correct
66 Correct 225 ms 13220 KB Output is correct
67 Correct 198 ms 12660 KB Output is correct
68 Correct 114 ms 11768 KB Output is correct
69 Correct 97 ms 11768 KB Output is correct
70 Correct 152 ms 24268 KB Output is correct
71 Correct 133 ms 22568 KB Output is correct
72 Correct 6 ms 4984 KB Output is correct
73 Correct 12 ms 5624 KB Output is correct
74 Correct 13 ms 5596 KB Output is correct
75 Correct 6 ms 5112 KB Output is correct
76 Correct 7 ms 5112 KB Output is correct
77 Correct 15 ms 6648 KB Output is correct
78 Correct 11 ms 5880 KB Output is correct
79 Correct 13 ms 5624 KB Output is correct
80 Correct 12 ms 5756 KB Output is correct
81 Correct 7 ms 4984 KB Output is correct
82 Correct 9 ms 5112 KB Output is correct
83 Correct 6 ms 5116 KB Output is correct
84 Correct 9 ms 5156 KB Output is correct
85 Correct 8 ms 4984 KB Output is correct
86 Correct 45 ms 6648 KB Output is correct
87 Correct 45 ms 6776 KB Output is correct
88 Correct 45 ms 6828 KB Output is correct
89 Correct 14 ms 6776 KB Output is correct
90 Correct 13 ms 5880 KB Output is correct
91 Correct 54 ms 7032 KB Output is correct
92 Correct 55 ms 7004 KB Output is correct
93 Correct 6 ms 4984 KB Output is correct
94 Correct 158 ms 33904 KB Output is correct
95 Correct 154 ms 33624 KB Output is correct
96 Correct 148 ms 33156 KB Output is correct
97 Correct 130 ms 31872 KB Output is correct
98 Correct 117 ms 31596 KB Output is correct
99 Correct 254 ms 18552 KB Output is correct
100 Correct 279 ms 18444 KB Output is correct
101 Correct 347 ms 18296 KB Output is correct
102 Correct 210 ms 16632 KB Output is correct
103 Correct 145 ms 22904 KB Output is correct
104 Correct 150 ms 23308 KB Output is correct
105 Correct 156 ms 23004 KB Output is correct
106 Correct 158 ms 22908 KB Output is correct
107 Correct 153 ms 22780 KB Output is correct
108 Correct 125 ms 31604 KB Output is correct
109 Correct 125 ms 31604 KB Output is correct
110 Correct 116 ms 12400 KB Output is correct
111 Correct 120 ms 12280 KB Output is correct
112 Correct 214 ms 11768 KB Output is correct
113 Correct 172 ms 12124 KB Output is correct