oj.uz

Submission #714666

# Submission time Handle Problem Language Result Execution time Memory
714666 2023-03-25T07:33:34 Z ajab_01 Railway (BOI17_railway) C++17
100 / 100
 185 ms 35668 KB 
#include<bits/stdc++.h>
using namespace std;

const int N = 1e5 + 5;
vector<pair<int , int> > g[N];
set<pair<int , int> > st[N];
vector<int> ans;
int sz[N] , n , m , k;

void dfs(int v , int par , int num){
	for(auto i : g[v]){
		int u = i.first , w = i.second;
		if(u == par) continue;
		dfs(u , v , w);
		if(st[v].size() < st[u].size())
			swap(st[v] , st[u]);
		for(auto &p : st[u]){
			auto it = st[v].lower_bound({p.first , -1});
			if(it == st[v].end()){
				st[v].insert(p);
				continue;
			}
			pair<int , int> pp = *it;
			if(pp.first == p.first){
				st[v].erase(pp);
				if(p.second + pp.second != sz[p.first])
					st[v].insert({p.first , p.second + pp.second});
			}
			else{
				st[v].insert(p);
			}
		}
		st[u].clear();
	}


	if((int)st[v].size() >= k)
		ans.push_back(num);
}

int main(){
	ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
	cin >> n >> m >> k;
	for(int i = 1 ; i <= n - 1 ; i++){
		int u , v;
		cin >> u >> v;
		g[u].push_back({v , i});
		g[v].push_back({u , i});
	}

	for(int i = 1 ; i <= m ; i++){
		int s;
		cin >> s;
		sz[i] = s;
		for(int j = 0 ; j < s ; j++){
			int x;
			cin >> x;
			if(s == 1) continue;
			st[x].insert({i , 1});
		}
	}

	dfs(1 , 0 , 0);

	sort(ans.begin() , ans.end());

	cout << (int)ans.size() << '\n';
	for(int i : ans)
		cout << i << ' ';
	cout << '\n'; 
	return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7252 KB Output is correct
2 Correct 9 ms 7880 KB Output is correct
3 Correct 8 ms 7892 KB Output is correct
4 Correct 4 ms 7328 KB Output is correct
5 Correct 4 ms 7372 KB Output is correct
6 Correct 8 ms 8788 KB Output is correct
7 Correct 10 ms 8020 KB Output is correct
8 Correct 7 ms 7892 KB Output is correct
9 Correct 8 ms 7896 KB Output is correct
10 Correct 4 ms 7252 KB Output is correct
11 Correct 5 ms 7272 KB Output is correct
12 Correct 4 ms 7380 KB Output is correct
13 Correct 4 ms 7368 KB Output is correct
14 Correct 4 ms 7252 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7252 KB Output is correct
2 Correct 9 ms 7880 KB Output is correct
3 Correct 8 ms 7892 KB Output is correct
4 Correct 4 ms 7328 KB Output is correct
5 Correct 4 ms 7372 KB Output is correct
6 Correct 8 ms 8788 KB Output is correct
7 Correct 10 ms 8020 KB Output is correct
8 Correct 7 ms 7892 KB Output is correct
9 Correct 8 ms 7896 KB Output is correct
10 Correct 4 ms 7252 KB Output is correct
11 Correct 5 ms 7272 KB Output is correct
12 Correct 4 ms 7380 KB Output is correct
13 Correct 4 ms 7368 KB Output is correct
14 Correct 4 ms 7252 KB Output is correct
15 Correct 55 ms 11456 KB Output is correct
16 Correct 50 ms 11468 KB Output is correct
17 Correct 49 ms 11500 KB Output is correct
18 Correct 10 ms 9044 KB Output is correct
19 Correct 9 ms 8020 KB Output is correct
20 Correct 63 ms 12580 KB Output is correct
21 Correct 70 ms 12572 KB Output is correct
22 Correct 5 ms 7252 KB Output is correct
23 Correct 9 ms 7892 KB Output is correct
24 Correct 10 ms 7856 KB Output is correct
25 Correct 5 ms 7364 KB Output is correct
26 Correct 5 ms 7252 KB Output is correct
27 Correct 9 ms 8792 KB Output is correct
28 Correct 8 ms 8020 KB Output is correct
29 Correct 10 ms 7896 KB Output is correct
30 Correct 8 ms 7948 KB Output is correct
31 Correct 4 ms 7252 KB Output is correct
32 Correct 4 ms 7380 KB Output is correct
33 Correct 4 ms 7372 KB Output is correct
34 Correct 4 ms 7380 KB Output is correct
35 Correct 4 ms 7252 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 119 ms 33488 KB Output is correct
2 Correct 4 ms 7252 KB Output is correct
3 Correct 122 ms 33388 KB Output is correct
4 Correct 121 ms 32724 KB Output is correct
5 Correct 113 ms 33612 KB Output is correct
6 Correct 134 ms 35668 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 138 ms 24524 KB Output is correct
2 Correct 131 ms 17300 KB Output is correct
3 Correct 140 ms 16804 KB Output is correct
4 Correct 143 ms 16540 KB Output is correct
5 Correct 151 ms 16504 KB Output is correct
6 Correct 119 ms 24780 KB Output is correct
7 Correct 110 ms 24688 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 138 ms 24524 KB Output is correct
2 Correct 131 ms 17300 KB Output is correct
3 Correct 140 ms 16804 KB Output is correct
4 Correct 143 ms 16540 KB Output is correct
5 Correct 151 ms 16504 KB Output is correct
6 Correct 119 ms 24780 KB Output is correct
7 Correct 110 ms 24688 KB Output is correct
8 Correct 102 ms 24620 KB Output is correct
9 Correct 100 ms 24600 KB Output is correct
10 Correct 93 ms 33572 KB Output is correct
11 Correct 109 ms 33512 KB Output is correct
12 Correct 84 ms 16088 KB Output is correct
13 Correct 82 ms 16104 KB Output is correct
14 Correct 145 ms 15948 KB Output is correct
15 Correct 164 ms 15896 KB Output is correct
16 Correct 154 ms 16492 KB Output is correct
17 Correct 157 ms 16828 KB Output is correct
18 Correct 147 ms 16624 KB Output is correct
19 Correct 142 ms 17356 KB Output is correct
20 Correct 104 ms 24992 KB Output is correct
21 Correct 105 ms 25004 KB Output is correct
22 Correct 124 ms 24980 KB Output is correct

Subtask #6
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7252 KB Output is correct
2 Correct 9 ms 7880 KB Output is correct
3 Correct 8 ms 7892 KB Output is correct
4 Correct 4 ms 7328 KB Output is correct
5 Correct 4 ms 7372 KB Output is correct
6 Correct 8 ms 8788 KB Output is correct
7 Correct 10 ms 8020 KB Output is correct
8 Correct 7 ms 7892 KB Output is correct
9 Correct 8 ms 7896 KB Output is correct
10 Correct 4 ms 7252 KB Output is correct
11 Correct 5 ms 7272 KB Output is correct
12 Correct 4 ms 7380 KB Output is correct
13 Correct 4 ms 7368 KB Output is correct
14 Correct 4 ms 7252 KB Output is correct
15 Correct 55 ms 11456 KB Output is correct
16 Correct 50 ms 11468 KB Output is correct
17 Correct 49 ms 11500 KB Output is correct
18 Correct 10 ms 9044 KB Output is correct
19 Correct 9 ms 8020 KB Output is correct
20 Correct 63 ms 12580 KB Output is correct
21 Correct 70 ms 12572 KB Output is correct
22 Correct 5 ms 7252 KB Output is correct
23 Correct 9 ms 7892 KB Output is correct
24 Correct 10 ms 7856 KB Output is correct
25 Correct 5 ms 7364 KB Output is correct
26 Correct 5 ms 7252 KB Output is correct
27 Correct 9 ms 8792 KB Output is correct
28 Correct 8 ms 8020 KB Output is correct
29 Correct 10 ms 7896 KB Output is correct
30 Correct 8 ms 7948 KB Output is correct
31 Correct 4 ms 7252 KB Output is correct
32 Correct 4 ms 7380 KB Output is correct
33 Correct 4 ms 7372 KB Output is correct
34 Correct 4 ms 7380 KB Output is correct
35 Correct 4 ms 7252 KB Output is correct
36 Correct 119 ms 33488 KB Output is correct
37 Correct 4 ms 7252 KB Output is correct
38 Correct 122 ms 33388 KB Output is correct
39 Correct 121 ms 32724 KB Output is correct
40 Correct 113 ms 33612 KB Output is correct
41 Correct 134 ms 35668 KB Output is correct
42 Correct 138 ms 24524 KB Output is correct
43 Correct 131 ms 17300 KB Output is correct
44 Correct 140 ms 16804 KB Output is correct
45 Correct 143 ms 16540 KB Output is correct
46 Correct 151 ms 16504 KB Output is correct
47 Correct 119 ms 24780 KB Output is correct
48 Correct 110 ms 24688 KB Output is correct
49 Correct 102 ms 24620 KB Output is correct
50 Correct 100 ms 24600 KB Output is correct
51 Correct 93 ms 33572 KB Output is correct
52 Correct 109 ms 33512 KB Output is correct
53 Correct 84 ms 16088 KB Output is correct
54 Correct 82 ms 16104 KB Output is correct
55 Correct 145 ms 15948 KB Output is correct
56 Correct 164 ms 15896 KB Output is correct
57 Correct 154 ms 16492 KB Output is correct
58 Correct 157 ms 16828 KB Output is correct
59 Correct 147 ms 16624 KB Output is correct
60 Correct 142 ms 17356 KB Output is correct
61 Correct 104 ms 24992 KB Output is correct
62 Correct 105 ms 25004 KB Output is correct
63 Correct 124 ms 24980 KB Output is correct
64 Correct 126 ms 24828 KB Output is correct
65 Correct 177 ms 16204 KB Output is correct
66 Correct 149 ms 15944 KB Output is correct
67 Correct 137 ms 15820 KB Output is correct
68 Correct 65 ms 14288 KB Output is correct
69 Correct 71 ms 14296 KB Output is correct
70 Correct 112 ms 25248 KB Output is correct
71 Correct 111 ms 24552 KB Output is correct
72 Correct 4 ms 7252 KB Output is correct
73 Correct 8 ms 7892 KB Output is correct
74 Correct 8 ms 7892 KB Output is correct
75 Correct 5 ms 7252 KB Output is correct
76 Correct 4 ms 7252 KB Output is correct
77 Correct 8 ms 8784 KB Output is correct
78 Correct 7 ms 8020 KB Output is correct
79 Correct 7 ms 7888 KB Output is correct
80 Correct 8 ms 7892 KB Output is correct
81 Correct 4 ms 7252 KB Output is correct
82 Correct 4 ms 7252 KB Output is correct
83 Correct 6 ms 7380 KB Output is correct
84 Correct 5 ms 7372 KB Output is correct
85 Correct 5 ms 7252 KB Output is correct
86 Correct 62 ms 11724 KB Output is correct
87 Correct 56 ms 11468 KB Output is correct
88 Correct 62 ms 11552 KB Output is correct
89 Correct 10 ms 8916 KB Output is correct
90 Correct 9 ms 8020 KB Output is correct
91 Correct 64 ms 12624 KB Output is correct
92 Correct 64 ms 12576 KB Output is correct
93 Correct 4 ms 7252 KB Output is correct
94 Correct 119 ms 33616 KB Output is correct
95 Correct 119 ms 33220 KB Output is correct
96 Correct 112 ms 32716 KB Output is correct
97 Correct 120 ms 33412 KB Output is correct
98 Correct 134 ms 35460 KB Output is correct
99 Correct 160 ms 16560 KB Output is correct
100 Correct 185 ms 16680 KB Output is correct
101 Correct 170 ms 16628 KB Output is correct
102 Correct 135 ms 17144 KB Output is correct
103 Correct 105 ms 24620 KB Output is correct
104 Correct 106 ms 25016 KB Output is correct
105 Correct 112 ms 24652 KB Output is correct
106 Correct 123 ms 24832 KB Output is correct
107 Correct 102 ms 24564 KB Output is correct
108 Correct 97 ms 33612 KB Output is correct
109 Correct 102 ms 33528 KB Output is correct
110 Correct 85 ms 16100 KB Output is correct
111 Correct 82 ms 16116 KB Output is correct
112 Correct 140 ms 15916 KB Output is correct
113 Correct 136 ms 15836 KB Output is correct