oj.uz

답안 #552854

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
552854 2022-04-24T07:36:39 Z _Avocado_ Railway (BOI17_railway) C++14
100 / 100
 183 ms 43748 KB 
#include <bits/stdc++.h>
#define int int64_t
using namespace std;

vector<vector<int>>graph;
vector<unordered_map<int, int>>col;
vector<int>ans, tot, par;

int n, m, k;

void dfs(int v, int p){
	par[v] = p;
	for(auto u: graph[v]){
		if(u != p){
			dfs(u, v);
			if(col[u].size() > col[v].size()) swap(col[u], col[v]);
			for(auto [key, val] : col[u]){
				col[v][key] += val;
				if(col[v][key] == tot[key]){
					col[v].erase(key);
				}
			}
		}
	}
	
	if(col[v].size() >= k) ans[v] = 1;
}

signed main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	//ifstream cin ("input.in");
	//ofstream cout ("output.out");
	
	cin>>n>>m>>k;
	
	graph.assign(n, vector<int>());
	col.assign(n, unordered_map<int, int>());
	ans.assign(n, 0);
	par.assign(n, 0);
	vector<pair<int, int>>input;
	
	for(int i = 0; i<n-1; ++i){
		int a, b; cin>>a>>b;
		--a; --b;
		graph[a].push_back(b);
		graph[b].push_back(a);
		input.push_back({a, b});
	}
	
	tot.assign(m, 0);
	
	for(int i = 0; i<m; ++i){
		int s; cin>>s;
		tot[i] = s;
		for(int j = 0; j<s; ++j){
			int a; cin>>a;
			--a;
			++col[a][i];
		}
	}

	dfs(0, 0);
	
	vector<int>fred;
	
	for(int i = 0; i<n-1; ++i){
		int a = input[i].first;
		int b = input[i].second;
		if(par[a] == b && ans[a]) fred.push_back(i+1);
		else if(par[b] == a && ans[b]) fred.push_back(i+1);
	}
	
	cout<<fred.size()<<'\n';
	for(auto u: fred) cout<<u<<" ";
	
	
	cout<<'\n';
}

Compilation message

railway.cpp: In function 'void dfs(int64_t, int64_t)':
railway.cpp:17:13: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   17 |    for(auto [key, val] : col[u]){
      |             ^
railway.cpp:26:19: warning: comparison of integer expressions of different signedness: 'std::unordered_map<long int, long int>::size_type' {aka 'long unsigned int'} and 'int64_t' {aka 'long int'} [-Wsign-compare]
   26 |  if(col[v].size() >= k) ans[v] = 1;
      |     ~~~~~~~~~~~~~~^~~~

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 7 ms 2084 KB Output is correct
3 Correct 7 ms 1936 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 316 KB Output is correct
6 Correct 6 ms 2880 KB Output is correct
7 Correct 5 ms 2256 KB Output is correct
8 Correct 4 ms 2212 KB Output is correct
9 Correct 5 ms 2256 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 7 ms 2084 KB Output is correct
3 Correct 7 ms 1936 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 316 KB Output is correct
6 Correct 6 ms 2880 KB Output is correct
7 Correct 5 ms 2256 KB Output is correct
8 Correct 4 ms 2212 KB Output is correct
9 Correct 5 ms 2256 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 40 ms 7624 KB Output is correct
16 Correct 37 ms 7624 KB Output is correct
17 Correct 30 ms 7684 KB Output is correct
18 Correct 7 ms 2852 KB Output is correct
19 Correct 5 ms 2244 KB Output is correct
20 Correct 34 ms 6896 KB Output is correct
21 Correct 40 ms 6844 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 8 ms 1992 KB Output is correct
24 Correct 7 ms 1996 KB Output is correct
25 Correct 1 ms 316 KB Output is correct
26 Correct 1 ms 324 KB Output is correct
27 Correct 6 ms 2940 KB Output is correct
28 Correct 5 ms 2200 KB Output is correct
29 Correct 5 ms 2252 KB Output is correct
30 Correct 5 ms 2256 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 144 ms 43636 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 128 ms 42744 KB Output is correct
4 Correct 122 ms 41856 KB Output is correct
5 Correct 107 ms 42624 KB Output is correct
6 Correct 107 ms 43140 KB Output is correct

Subtask #4
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 97 ms 30864 KB Output is correct
2 Correct 149 ms 26312 KB Output is correct
3 Correct 160 ms 31404 KB Output is correct
4 Correct 138 ms 31604 KB Output is correct
5 Correct 183 ms 31508 KB Output is correct
6 Correct 130 ms 31260 KB Output is correct
7 Correct 110 ms 31096 KB Output is correct

Subtask #5
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 97 ms 30864 KB Output is correct
2 Correct 149 ms 26312 KB Output is correct
3 Correct 160 ms 31404 KB Output is correct
4 Correct 138 ms 31604 KB Output is correct
5 Correct 183 ms 31508 KB Output is correct
6 Correct 130 ms 31260 KB Output is correct
7 Correct 110 ms 31096 KB Output is correct
8 Correct 104 ms 33596 KB Output is correct
9 Correct 105 ms 33532 KB Output is correct
10 Correct 102 ms 42176 KB Output is correct
11 Correct 101 ms 42096 KB Output is correct
12 Correct 99 ms 26704 KB Output is correct
13 Correct 105 ms 26760 KB Output is correct
14 Correct 128 ms 26708 KB Output is correct
15 Correct 107 ms 26868 KB Output is correct
16 Correct 144 ms 32760 KB Output is correct
17 Correct 143 ms 32812 KB Output is correct
18 Correct 151 ms 30864 KB Output is correct
19 Correct 139 ms 26972 KB Output is correct
20 Correct 94 ms 31548 KB Output is correct
21 Correct 97 ms 31856 KB Output is correct
22 Correct 133 ms 31676 KB Output is correct

Subtask #6
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 7 ms 2084 KB Output is correct
3 Correct 7 ms 1936 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 316 KB Output is correct
6 Correct 6 ms 2880 KB Output is correct
7 Correct 5 ms 2256 KB Output is correct
8 Correct 4 ms 2212 KB Output is correct
9 Correct 5 ms 2256 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 40 ms 7624 KB Output is correct
16 Correct 37 ms 7624 KB Output is correct
17 Correct 30 ms 7684 KB Output is correct
18 Correct 7 ms 2852 KB Output is correct
19 Correct 5 ms 2244 KB Output is correct
20 Correct 34 ms 6896 KB Output is correct
21 Correct 40 ms 6844 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 8 ms 1992 KB Output is correct
24 Correct 7 ms 1996 KB Output is correct
25 Correct 1 ms 316 KB Output is correct
26 Correct 1 ms 324 KB Output is correct
27 Correct 6 ms 2940 KB Output is correct
28 Correct 5 ms 2200 KB Output is correct
29 Correct 5 ms 2252 KB Output is correct
30 Correct 5 ms 2256 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 144 ms 43636 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 128 ms 42744 KB Output is correct
39 Correct 122 ms 41856 KB Output is correct
40 Correct 107 ms 42624 KB Output is correct
41 Correct 107 ms 43140 KB Output is correct
42 Correct 97 ms 30864 KB Output is correct
43 Correct 149 ms 26312 KB Output is correct
44 Correct 160 ms 31404 KB Output is correct
45 Correct 138 ms 31604 KB Output is correct
46 Correct 183 ms 31508 KB Output is correct
47 Correct 130 ms 31260 KB Output is correct
48 Correct 110 ms 31096 KB Output is correct
49 Correct 104 ms 33596 KB Output is correct
50 Correct 105 ms 33532 KB Output is correct
51 Correct 102 ms 42176 KB Output is correct
52 Correct 101 ms 42096 KB Output is correct
53 Correct 99 ms 26704 KB Output is correct
54 Correct 105 ms 26760 KB Output is correct
55 Correct 128 ms 26708 KB Output is correct
56 Correct 107 ms 26868 KB Output is correct
57 Correct 144 ms 32760 KB Output is correct
58 Correct 143 ms 32812 KB Output is correct
59 Correct 151 ms 30864 KB Output is correct
60 Correct 139 ms 26972 KB Output is correct
61 Correct 94 ms 31548 KB Output is correct
62 Correct 97 ms 31856 KB Output is correct
63 Correct 133 ms 31676 KB Output is correct
64 Correct 104 ms 32856 KB Output is correct
65 Correct 165 ms 41716 KB Output is correct
66 Correct 162 ms 38068 KB Output is correct
67 Correct 145 ms 32696 KB Output is correct
68 Correct 66 ms 23532 KB Output is correct
69 Correct 64 ms 23456 KB Output is correct
70 Correct 97 ms 34136 KB Output is correct
71 Correct 119 ms 33340 KB Output is correct
72 Correct 1 ms 212 KB Output is correct
73 Correct 4 ms 2000 KB Output is correct
74 Correct 4 ms 2000 KB Output is correct
75 Correct 1 ms 212 KB Output is correct
76 Correct 1 ms 212 KB Output is correct
77 Correct 7 ms 2896 KB Output is correct
78 Correct 5 ms 2256 KB Output is correct
79 Correct 5 ms 2256 KB Output is correct
80 Correct 5 ms 2220 KB Output is correct
81 Correct 1 ms 212 KB Output is correct
82 Correct 1 ms 340 KB Output is correct
83 Correct 1 ms 212 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 1 ms 212 KB Output is correct
86 Correct 43 ms 7624 KB Output is correct
87 Correct 29 ms 7632 KB Output is correct
88 Correct 31 ms 7796 KB Output is correct
89 Correct 7 ms 2944 KB Output is correct
90 Correct 6 ms 2248 KB Output is correct
91 Correct 39 ms 6872 KB Output is correct
92 Correct 49 ms 6856 KB Output is correct
93 Correct 1 ms 212 KB Output is correct
94 Correct 118 ms 43748 KB Output is correct
95 Correct 106 ms 42672 KB Output is correct
96 Correct 102 ms 41832 KB Output is correct
97 Correct 107 ms 42588 KB Output is correct
98 Correct 125 ms 43200 KB Output is correct
99 Correct 150 ms 35400 KB Output is correct
100 Correct 147 ms 32388 KB Output is correct
101 Correct 168 ms 32748 KB Output is correct
102 Correct 138 ms 26960 KB Output is correct
103 Correct 109 ms 31092 KB Output is correct
104 Correct 113 ms 31864 KB Output is correct
105 Correct 93 ms 31092 KB Output is correct
106 Correct 112 ms 33856 KB Output is correct
107 Correct 92 ms 33556 KB Output is correct
108 Correct 89 ms 42240 KB Output is correct
109 Correct 100 ms 42096 KB Output is correct
110 Correct 129 ms 26712 KB Output is correct
111 Correct 103 ms 26620 KB Output is correct
112 Correct 107 ms 26680 KB Output is correct
113 Correct 107 ms 26564 KB Output is correct