oj.uz

답안 #890075

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
890075 2023-12-20T13:44:28 Z Onown 공장들 (JOI14_factories) C++17
33 / 100
 8000 ms 199992 KB 
#include <bits/stdc++.h>
#include <factories.h>
#pragma GCC optimize("Ofast")
using namespace std;

const int N = 5e5 + 55, L = 2e0 + 20, Q = 1e2 + 12;
const long long I = 1e18 + 118;
int n, q, h[N], par[N][L];
long long spt[N][L], dis[N];
vector<pair<int, int>> adj[N];

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

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

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

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

long long Query(int S, int X[], int T, int Y[]) {
	if (S < Q) {
		long long ans = I;
		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 < S; i++) 
		dis[X[i] + 1] = 0;
	dfsu(1, 0);
	dfsd(1, 0);

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

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 103 ms 35420 KB Output is correct
2 Correct 704 ms 41844 KB Output is correct
3 Correct 1326 ms 41864 KB Output is correct
4 Correct 506 ms 41808 KB Output is correct
5 Correct 978 ms 41864 KB Output is correct
6 Correct 514 ms 41880 KB Output is correct
7 Correct 1085 ms 41860 KB Output is correct
8 Correct 2522 ms 41860 KB Output is correct
9 Correct 941 ms 41976 KB Output is correct
10 Correct 516 ms 41864 KB Output is correct
11 Correct 1200 ms 41856 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 35416 KB Output is correct
2 Correct 1190 ms 189716 KB Output is correct
3 Correct 3244 ms 190048 KB Output is correct
4 Correct 852 ms 189844 KB Output is correct
5 Correct 3570 ms 199992 KB Output is correct
6 Correct 2533 ms 190372 KB Output is correct
7 Correct 4594 ms 71144 KB Output is correct
8 Correct 1042 ms 71348 KB Output is correct
9 Correct 5079 ms 72428 KB Output is correct
10 Correct 2667 ms 71560 KB Output is correct

Subtask #3
0 / 67.0

# 결과 실행 시간 메모리 Grader output
1 Correct 103 ms 35420 KB Output is correct
2 Correct 704 ms 41844 KB Output is correct
3 Correct 1326 ms 41864 KB Output is correct
4 Correct 506 ms 41808 KB Output is correct
5 Correct 978 ms 41864 KB Output is correct
6 Correct 514 ms 41880 KB Output is correct
7 Correct 1085 ms 41860 KB Output is correct
8 Correct 2522 ms 41860 KB Output is correct
9 Correct 941 ms 41976 KB Output is correct
10 Correct 516 ms 41864 KB Output is correct
11 Correct 1200 ms 41856 KB Output is correct
12 Correct 7 ms 35416 KB Output is correct
13 Correct 1190 ms 189716 KB Output is correct
14 Correct 3244 ms 190048 KB Output is correct
15 Correct 852 ms 189844 KB Output is correct
16 Correct 3570 ms 199992 KB Output is correct
17 Correct 2533 ms 190372 KB Output is correct
18 Correct 4594 ms 71144 KB Output is correct
19 Correct 1042 ms 71348 KB Output is correct
20 Correct 5079 ms 72428 KB Output is correct
21 Correct 2667 ms 71560 KB Output is correct
22 Correct 6621 ms 188216 KB Output is correct
23 Correct 4006 ms 189160 KB Output is correct
24 Correct 7909 ms 189276 KB Output is correct
25 Correct 7208 ms 190900 KB Output is correct
26 Execution timed out 8029 ms 189592 KB Time limit exceeded
27 Halted 0 ms 0 KB -