oj.uz

답안 #782757

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
782757 2023-07-14T09:01:00 Z dozer 경주 (Race) (IOI11_race) C++14
100 / 100
 330 ms 38652 KB 
#include <bits/stdc++.h>
using namespace std;
#define sp " "
#define endl "\n"
#define fileio() freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout)
#define fastio() cin.tie(0), ios_base::sync_with_stdio(0)
#define pb push_back
#define pii pair<int, int>
#define st first
#define nd second
#define M 200005


vector<pii> adj[M];
int sz[M], dep[M], dist[M], vis[M], mini[1000006];
int k, n, ans = M;

void dfs(int node, int root){
	sz[node] = 1;
	//cout<<node<<endl;
	for (auto i : adj[node]){
		if (i.st == root || vis[i.st]) continue;
		dfs(i.st, node);
		sz[node] += sz[i.st];
	}
}

void dfs2(int node, int root, int d, int dd, vector<pii> &all){
	all.pb({dd, d});
	for (auto i : adj[node]){
		if (i.st == root || vis[i.st]) continue;
		dfs2(i.st, node, d + 1, dd + i.nd, all);
	}
}

int find_centroid(int node, int root, int S){
	for (auto i : adj[node]){
		if (i.st == root || vis[i.st]) continue;
		if (sz[i.st] >= S / 2) return find_centroid(i.st, node, S);
	}
	return node;
}

void f(int node){
	dfs(node, 0);
	node = find_centroid(node, 0, sz[node]);
	vector<pii> v;
	for (auto i : adj[node]){
		if (vis[i.st]) continue;
		vector<pii> tmp;
		dfs2(i.st, node, 1, i.nd, tmp);
		for (auto j : tmp){
			if (j.st <= k) ans = min(ans, mini[k - j.st] + j.nd);
		}
		for (auto j : tmp){
			if (j.st <= k) mini[j.st] = min(mini[j.st], j.nd);
		}
		for (auto j : tmp)
		{
			v.pb(j);
		}
	}

	for (auto i : v){
		if (i.st <= k) mini[i.st] = M;
	}

	vis[node] = 1;
	for (auto i : adj[node]){
		if (vis[i.st] == 0) f(i.st);
	}
}


int best_path(int N, int K, int H[][2], int L[]){
	k = K, n = N;

	for (int i = 0; i < N - 1; i++){
		int u = H[i][0] + 1, v = H[i][1] + 1;
		//cout<<u<<sp<<v<<endl;
		adj[u].pb({v, L[i]});
		adj[v].pb({u, L[i]});
	}

	for (int i = 1; i <= K; i++) mini[i] = M;

	f(1);
	if (ans < M)
		return ans;
	return -1;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5000 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 5004 KB Output is correct
6 Correct 3 ms 4924 KB Output is correct
7 Correct 3 ms 5008 KB Output is correct
8 Correct 3 ms 5004 KB Output is correct
9 Correct 2 ms 5000 KB Output is correct
10 Correct 3 ms 5008 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 3 ms 5004 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 5004 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 5008 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5000 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 5004 KB Output is correct
6 Correct 3 ms 4924 KB Output is correct
7 Correct 3 ms 5008 KB Output is correct
8 Correct 3 ms 5004 KB Output is correct
9 Correct 2 ms 5000 KB Output is correct
10 Correct 3 ms 5008 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 3 ms 5004 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 5004 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 5008 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 4 ms 5076 KB Output is correct
22 Correct 5 ms 8660 KB Output is correct
23 Correct 4 ms 7960 KB Output is correct
24 Correct 5 ms 8404 KB Output is correct
25 Correct 4 ms 8404 KB Output is correct
26 Correct 3 ms 6420 KB Output is correct
27 Correct 4 ms 8148 KB Output is correct
28 Correct 4 ms 5844 KB Output is correct
29 Correct 4 ms 6356 KB Output is correct
30 Correct 4 ms 6484 KB Output is correct
31 Correct 4 ms 7636 KB Output is correct
32 Correct 5 ms 7892 KB Output is correct
33 Correct 5 ms 8148 KB Output is correct
34 Correct 5 ms 7380 KB Output is correct
35 Correct 6 ms 8276 KB Output is correct
36 Correct 5 ms 8720 KB Output is correct
37 Correct 5 ms 8148 KB Output is correct
38 Correct 4 ms 6996 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5000 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 5004 KB Output is correct
6 Correct 3 ms 4924 KB Output is correct
7 Correct 3 ms 5008 KB Output is correct
8 Correct 3 ms 5004 KB Output is correct
9 Correct 2 ms 5000 KB Output is correct
10 Correct 3 ms 5008 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 3 ms 5004 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 5004 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 5008 KB Output is correct
19 Correct 95 ms 12840 KB Output is correct
20 Correct 96 ms 12956 KB Output is correct
21 Correct 106 ms 12904 KB Output is correct
22 Correct 86 ms 12864 KB Output is correct
23 Correct 70 ms 13492 KB Output is correct
24 Correct 55 ms 12776 KB Output is correct
25 Correct 132 ms 17484 KB Output is correct
26 Correct 86 ms 20652 KB Output is correct
27 Correct 149 ms 18844 KB Output is correct
28 Correct 312 ms 35484 KB Output is correct
29 Correct 318 ms 34280 KB Output is correct
30 Correct 150 ms 18880 KB Output is correct
31 Correct 152 ms 18912 KB Output is correct
32 Correct 186 ms 18888 KB Output is correct
33 Correct 204 ms 20084 KB Output is correct
34 Correct 207 ms 20020 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5000 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 5004 KB Output is correct
6 Correct 3 ms 4924 KB Output is correct
7 Correct 3 ms 5008 KB Output is correct
8 Correct 3 ms 5004 KB Output is correct
9 Correct 2 ms 5000 KB Output is correct
10 Correct 3 ms 5008 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 3 ms 5004 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 5004 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 5008 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 4 ms 5076 KB Output is correct
22 Correct 5 ms 8660 KB Output is correct
23 Correct 4 ms 7960 KB Output is correct
24 Correct 5 ms 8404 KB Output is correct
25 Correct 4 ms 8404 KB Output is correct
26 Correct 3 ms 6420 KB Output is correct
27 Correct 4 ms 8148 KB Output is correct
28 Correct 4 ms 5844 KB Output is correct
29 Correct 4 ms 6356 KB Output is correct
30 Correct 4 ms 6484 KB Output is correct
31 Correct 4 ms 7636 KB Output is correct
32 Correct 5 ms 7892 KB Output is correct
33 Correct 5 ms 8148 KB Output is correct
34 Correct 5 ms 7380 KB Output is correct
35 Correct 6 ms 8276 KB Output is correct
36 Correct 5 ms 8720 KB Output is correct
37 Correct 5 ms 8148 KB Output is correct
38 Correct 4 ms 6996 KB Output is correct
39 Correct 95 ms 12840 KB Output is correct
40 Correct 96 ms 12956 KB Output is correct
41 Correct 106 ms 12904 KB Output is correct
42 Correct 86 ms 12864 KB Output is correct
43 Correct 70 ms 13492 KB Output is correct
44 Correct 55 ms 12776 KB Output is correct
45 Correct 132 ms 17484 KB Output is correct
46 Correct 86 ms 20652 KB Output is correct
47 Correct 149 ms 18844 KB Output is correct
48 Correct 312 ms 35484 KB Output is correct
49 Correct 318 ms 34280 KB Output is correct
50 Correct 150 ms 18880 KB Output is correct
51 Correct 152 ms 18912 KB Output is correct
52 Correct 186 ms 18888 KB Output is correct
53 Correct 204 ms 20084 KB Output is correct
54 Correct 207 ms 20020 KB Output is correct
55 Correct 9 ms 5952 KB Output is correct
56 Correct 9 ms 5916 KB Output is correct
57 Correct 74 ms 13380 KB Output is correct
58 Correct 31 ms 12760 KB Output is correct
59 Correct 84 ms 21352 KB Output is correct
60 Correct 308 ms 38652 KB Output is correct
61 Correct 140 ms 18924 KB Output is correct
62 Correct 136 ms 22708 KB Output is correct
63 Correct 227 ms 22844 KB Output is correct
64 Correct 273 ms 22788 KB Output is correct
65 Correct 217 ms 21004 KB Output is correct
66 Correct 330 ms 35548 KB Output is correct
67 Correct 115 ms 23592 KB Output is correct
68 Correct 167 ms 24456 KB Output is correct
69 Correct 179 ms 24756 KB Output is correct
70 Correct 198 ms 23968 KB Output is correct