제출 #934597

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
934597		MinaRagy06	도로 폐쇄 (APIO21_roads)	C++17	14 / 100	2084 ms	85248 KiB

roads

#include <bits/stdc++.h>
#ifdef MINA
#include "grader.cpp"
#endif
#include "roads.h"
using namespace std;
#define ll long long

const int N = 100'005;
int t[N], curt;
vector<array<int, 2>> adj[N];
void build(int i, int p) {
	t[i] = curt++;
	vector<array<int, 2>> newadj;
	for (auto &[nxt, w] : adj[i]) {
		if (nxt == p) continue;
		build(nxt, i);
		newadj.push_back({nxt, w});
	}
	adj[i] = newadj;
}
ll dp[N][2], m;
ll solve(int i, bool v) {
	if (~dp[i][v]) return dp[i][v];
	if (v && m == 0) {
		return dp[i][v] = 1e18;
	}
	int sz = adj[i].size();
	ll dp2[sz + 1][m - v + 1]{};
	for (int j = sz - 1; j >= 0; j--) {
		for (int k = 0; k <= m - v; k++) {
			dp2[j][k] = dp2[j + 1][k] + solve(adj[i][j][0], 0) + adj[i][j][1];
			if (k - 1 >= 0) {
				dp2[j][k] = min(dp2[j][k], dp2[j + 1][k - 1] + solve(adj[i][j][0], 1));
			}
		}
	}
	return dp[i][v] = dp2[0][m - v];
}
vector<ll> minimum_closure_costs(int n, vector<int> u, vector<int> v, vector<int> w) {
	for (int i = 0; i < n - 1; i++) {
		adj[u[i]].push_back({v[i], w[i]});
		adj[v[i]].push_back({u[i], w[i]});
	}
	build(0, -1);
	vector<ll> ret(n);
	for (m = 0; m < n; m++) {
		for (int i = 0; i < n; i++) {
			dp[i][0] = dp[i][1] = -1;
		}
		ret[m] = solve(0, 0);
	}
	return ret;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 7
• Subtask 3: 14 / 14
• Subtask 4: 0 / 10
• Subtask 5: 0 / 17
• Subtask 6: 0 / 25
• Subtask 7: 0 / 22