oj.uz

답안 #890121

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
890121 2023-12-20T14:59:02 Z Onown 공장들 (JOI14_factories) C++17
33 / 100
 8000 ms 204548 KB 
#include <bits/stdc++.h>
#include <factories.h>
#pragma  GCC optimize ("Ofast")
using namespace std;

const int N = 5e5 + 55, L = 2e0 + 20;
const long long I = 1e18 + 118;
int n, q, h[N], par[N][L];
long long ans, spt[N][L], dis[N];
vector<pair<int, int>> adj[N];

void dfs(int v, int p) {
	for (int i = 0; i < (int)adj[v].size(); i++) {
		int u = adj[v][i].first, w = adj[v][i].second;
		if (u == p) {
			swap(adj[v].back(), adj[v][i]);
			adj[v].pop_back();
			if (i == (int)adj[v].size())
				return;
			u = adj[v][i].first, w = adj[v][i].second;
		}

		par[u][0] = v;
		spt[u][0] = w;
		h[u] = h[v] + 1;
		dfs(u, v);
	}
}

void dfsu(int v, int p) {
	for (auto [u, w]: adj[v]) {
		dfsu(u, v);
		dis[v] = min(dis[v], dis[u] + w);
	}
}

void dfsd(int v, int p) {
	for (auto [u, w]: adj[v]) {
		dis[u] = min(dis[u], dis[v] + w);
		dfsd(u, v);
	}
}

long long distance(int v, int u) {
	long long res = 0;
	if (h[v] < h[u]) swap(v, u);
	for (int i = 0; i < L && res < ans; i++)
		if ((1 << i) & (h[v] - h[u])) {
			res += spt[v][i];
			v = par[v][i];
		}
	if (v == u) return res;

	for (int i = L - 1; i >= 0 && res < ans; i--)
		if (par[v][i] != par[u][i]) {
			res += spt[v][i] + spt[u][i];
			v = par[v][i];
			u = par[u][i];
		}
	return res + spt[v][0] + spt[u][0];
}

void Init(int N, int A[], int B[], int D[]) {
	n = N;
	for (int i = 0; i < n - 1; i++) {
		adj[A[i] + 1].push_back({B[i] + 1, D[i]});
		adj[B[i] + 1].push_back({A[i] + 1, D[i]});
	}

	dfs(1, 0);
	for (int i = 1; i < L; i++)
		for (int j = 1; j <= n; j++) {
			par[j][i] = par[par[j][i - 1]][i - 1];
			spt[j][i] = spt[j][i - 1] + spt[par[j][i - 1]][i - 1];
		}
}

long long Query(int S, int X[], int T, int Y[]) {
	ans = I;
	if (S * T < N) {
		for (int i = 0; i < T; i++)
			for (int j = 0; j < S; j++)
				ans = min(ans, distance(Y[i] + 1, X[j] + 1));
		return ans;
	}
	
	for (int i = 0; i < N; dis[i++] = I);
	for (int i = 0; i < S; dis[X[i++] + 1] = 0); 
	dfsu(1, 0);
	dfsd(1, 0);

	for (int i = 0; i < T; i++)
		ans = min(ans, dis[Y[i] + 1]);
	return ans;
}

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 35416 KB Output is correct
2 Correct 3195 ms 41844 KB Output is correct
3 Correct 4075 ms 40016 KB Output is correct
4 Correct 1308 ms 41872 KB Output is correct
5 Correct 2971 ms 42028 KB Output is correct
6 Correct 7847 ms 41876 KB Output is correct
7 Correct 4059 ms 39804 KB Output is correct
8 Correct 1150 ms 42072 KB Output is correct
9 Correct 2858 ms 41876 KB Output is correct
10 Correct 7674 ms 41872 KB Output is correct
11 Correct 4061 ms 39804 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 35420 KB Output is correct
2 Correct 1222 ms 186936 KB Output is correct
3 Correct 2129 ms 188920 KB Output is correct
4 Correct 814 ms 188088 KB Output is correct
5 Correct 2858 ms 204548 KB Output is correct
6 Correct 1835 ms 189520 KB Output is correct
7 Correct 1854 ms 69460 KB Output is correct
8 Correct 892 ms 69300 KB Output is correct
9 Correct 2779 ms 71196 KB Output is correct
10 Correct 1338 ms 69712 KB Output is correct

Subtask #3
0 / 67.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 35416 KB Output is correct
2 Correct 3195 ms 41844 KB Output is correct
3 Correct 4075 ms 40016 KB Output is correct
4 Correct 1308 ms 41872 KB Output is correct
5 Correct 2971 ms 42028 KB Output is correct
6 Correct 7847 ms 41876 KB Output is correct
7 Correct 4059 ms 39804 KB Output is correct
8 Correct 1150 ms 42072 KB Output is correct
9 Correct 2858 ms 41876 KB Output is correct
10 Correct 7674 ms 41872 KB Output is correct
11 Correct 4061 ms 39804 KB Output is correct
12 Correct 7 ms 35420 KB Output is correct
13 Correct 1222 ms 186936 KB Output is correct
14 Correct 2129 ms 188920 KB Output is correct
15 Correct 814 ms 188088 KB Output is correct
16 Correct 2858 ms 204548 KB Output is correct
17 Correct 1835 ms 189520 KB Output is correct
18 Correct 1854 ms 69460 KB Output is correct
19 Correct 892 ms 69300 KB Output is correct
20 Correct 2779 ms 71196 KB Output is correct
21 Correct 1338 ms 69712 KB Output is correct
22 Correct 4033 ms 188216 KB Output is correct
23 Correct 2554 ms 189304 KB Output is correct
24 Correct 6350 ms 189908 KB Output is correct
25 Correct 5992 ms 191436 KB Output is correct
26 Execution timed out 8036 ms 190040 KB Time limit exceeded
27 Halted 0 ms 0 KB -